Top 10 Best square tubing end caps in 2026

Last Updated - 6/15/2026

🏆Best Choice

ZYYC

4 Pack 2'' Inch End Cap Square Tubing Black Plastic Plug,Tubing Post End Cap Suitable for Square TubeSquare Plastic Plug, Tubing Post End Cap

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•Applicable size：The size of the plastic plug is 2in*2in, suitable for square pipes with an outer diameter of 2in*2in an inner diameter of 1.75in-1.92in.
•Material: Made of high-quality plastic, durable and wear-resistant. Waterproof and compressive wear proof.
•Uses:Provides long lasting protection， great for preventing scuffs on wood floor or as protection glides on chair tips, bench feet, table legs, bar stool foot sliderschair leg protectors, patio furniture inserts, and much more.
•The 2"x2"Inch threaded inner plug can be used as a durable solution for home or outdoor projects, including replacement of fence/door railing covers, trailer frame ends, rod tube rod caps, wrought iron steel decorative plugs or any square opening. Not easy to deform, firmer, not easy to fall off, easy to install
•We believe that our high qualityTubing Post End Cap, will exceed your expectations. If you have questions, please contact us any time. We will try our best to solve your problems.

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$5.98

$6.98

-14%

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WZB

WZB 1 1x1 Square Tube End Cap Plastic Plugs 12 Pack, 1x1 1 Inch Square Tubing Plug 1x1 Tube End Caps Fence Post Pipe Cap Cover Tubing Insert Chair Glide Finishing Plugs, Black

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•◆【Item Dimension】 - You will get 12pcs 1" 1x1 square plastic plugs, the end cap fits 1 inch (one inch) OD square tubing (1x1) and wall thickness of 0.039" - 0.098". NOTE: When you buy before, please check size of the plastic plug is suitable for your tubing.
•◆【Ribs Design】 - Ribs Design can provide a sure grip inside the tube. Thick base of the tube plug is impact and abrasion resistant.
•◆【Prevent Scuffs】 - These tubing plugs end caps for chair glides work great for preventing scuffs on wood floor or as protection glides on chair tips, bench feet, table legs, bar stool foot sliders, chair leg caps and much more.
•◆【Easy to Use】 - These square tube end cap plugs would offer a neat safe finish to tube ends and prevent dirt and dust ingres. It's easy to use that no tools needed. You are able to install by hands within minutes. They serve as a long-lasting solution for many household or outdoor projects.
•◆【Multipurpose】 - The tubing insert cover is widely used to chair legs, bench feet, table legs, bar stool foot, and fences/fencing railing posts, furniture end covers, fitness equipment end covers, gate rail post covers, trailer frame ends, pole pipe rod caps, metal bike rack fittings, wrought iron steel finishing plugs, or any sqaure opening.

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$4.26

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WZB

WZB, 2 Inch 2x2 Square Tube End Cap Plastic Plugs 12 Pack, 2 Inch 2x2 Square Tubing Plug 2x2 Tube End Caps Fence Post Pipe Cap Cover Tubing Insert Chair Glide Finishing Plugs, Black

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•◆【Item Dimension】 - You will get 20pcs 2x3 surnews square plastic plugs.

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$4.99

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Uenhoy

Uenhoy 30 Pcs 3/4" Square Plastic Plugs Insert End Caps Black Tubing End Caps for Square Tube, Chair Legs, Fence

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•Product Dimension -- The square plastic plugs fit 0.79" OD (outside dimension) square tubing with inside hole diameter from 0.47" (12mm) to 0.75" (19mm). Not fit for 0.79" inside diameter tubing.
•Premium Quality -- The black plastic plugs are made of PE (polyethylene) material, waterproof, wear resistant, heavy duty and UV-weather resistant. With a series of ribs, the plastic end caps can be held in place.
•Function -- The tube end caps not only can reduce noise, but also prevent scratching on the floor when you move the furniture. Also can dress up the end of the square tube from hurting and prevent rust out from the rain.
•Widely Application -- The ribbed plugs can be used as glide protections on chair legs, bench feet, table legs, bar stool, pool fence. The square end caps also fit as luggage racks end inserts, fitness equipment end inserts and other square tubing end caps.
•Satisfactory After-Sales Service -- Uenhoy is devoted to providing high quality service. Please feel free to contact us if the item has any quality problem. Your satisfaction is our biggest power.

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$6.99

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Hydanle

8 Pack 2 Inch Square Plastic Plugs,Hydanle 50mm×50mm Insert End Caps for Square Tubing Post

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•✅These heavy duty tubing post end caps Fits 2" OD square tubing (2"x2") with INSIDE hole diameters (ID) from1.85" to 1.9" and wall thickness of .02" - .079" Steel Pipe, package quantity 8
•✅Flexible ridges or straps snugly hold these square plastic tubing plugs in place
•✅The square plugs are made of black LD polyethylene, these high-grade plastics black ribbed plugs work great for preventing scuffs on wood floor or as protection glides on bench feet, bar stool foot sliders, patio furniture, table legs, chairs legs, metal bed legs, couch legs and much more
•✅ The caps for square tubing also give a finished sleek look for many small projects: Suitable for trailer frame ends, bike rack fittings, wrought iron steel, fence post toppers, luggage racks iend inserts, step ladder caps, gate rail post covers, Fitness Equipment ends,steel kayak rack end caps and any square tubing end caps
•✅ Easy to install 2"x2" plugs are also designed to hold up against impact abuse, and harsh weather conditions

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$9.99

$14.99

-33%

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WZB

1 1/4 1.25 inch Square Tube End Cap Plastic Plugs 12 Pack,1 1/4 inch 1.25 Inch Square Tubing Plug 1.25x1.25 Tube End Caps Fence Post Pipe Cap Cover Tubing Insert Chair Glide Finishing Plugs,Black

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•◆【Item Dimension】 - You will get 12pcs 1 1/4 1.25" square plastic plugs, the end cap fits 1 1/4" (1.25 inch) OD square tubing (1.25x1.25) and wall thickness of 0.039" - 0.118". NOTE: When you buy before, please check size of the plastic plug is suitable for your tubing.
•◆【Ribs Design】 - Ribs Design can provide a sure grip inside the tube. Thick base of the tube plug is impact and abrasion resistant.
•◆【Prevent Scuffs】 - These tubing plugs end caps for chair glides work great for preventing scuffs on wood floor or as protection glides on chair tips, bench feet, table legs, bar stool foot sliders, chair leg caps and much more.
•◆【Easy to Use】 - These square tube end cap plugs would offer a neat safe finish to tube ends and prevent dirt and dust ingres. It's easy to use that no tools needed. You are able to install by hands within minutes. They serve as a long-lasting solution for many household or outdoor projects.
•◆【Multipurpose】 - The tubing insert cover is widely used to chair legs, bench feet, table legs, bar stool foot, and fences/fencing railing posts, furniture end covers, fitness equipment end covers, gate rail post covers, trailer frame ends, pole pipe rod caps, metal bike rack fittings, wrought iron steel finishing plugs, or any sqaure opening.

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$5.51

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suiwotin

Suiwotin 12Pack 19mm (3/4 Inch) Square Plastic Plugs, End Caps for Square Tubing/Black

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•【Package Included】: 12Pack x Square Plastic Plugs. NOTE: Please refer to the reminder of the size chart before buying. (Refer the Size Picture).
•【Product Feature】: Fits 19mm (3/4 Inch) OD square tubing (19mmx19mm) with Inside hole diameters (ID) from 1/2" to 11/16" (.50" - .69") and wall thickness of .042" - .125" (10-20) Gauge).
•【Premium Material】: Plastics black ribbed plugs are made of high quality black LD polyethylene, great for preventing scuffs on wood floor or as protection glides on bench feet, bar stool foot.
•【Application】: Easy to install 3/4"x3/4" snap-in plugs, provides long lasting protection while giving a finished sleek look for many small projects: chair glide floor protector, fitness equipment, fence post end caps, patio furniture leg tips, ect.

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$4.99

$5.49

-9%

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WZB

WZB 1 12 1.5 inch Square Tube End Cap Plastic Plugs 12 Pack, 1 12 inch 1.5 inch Square Tubing Plug 1.5 x 1.5 Tube End Caps Fence Post Pipe Cap Cover Tubing Insert Chair Glide Finishing Plugs, Black

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•◆【Item Dimension】 - You will get 12pcs 1 1/2 1.5" square plastic plugs, the end cap fits 1 1/2" (1.5 inch) OD square tubing (1.5x1.5) and wall thickness of 0.039" - 0.118". NOTE: When you buy before, please check size of the plastic plug is suitable for your tubing.
•◆【Ribs Design】 - Ribs Design can provide a sure grip inside the tube. Thick base of the tube plug is impact and abrasion resistant.
•◆【Prevent Scuffs】 - These tubing plugs end caps for chair glides work great for preventing scuffs on wood floor or as protection glides on chair tips, bench feet, table legs, bar stool foot sliders, chair leg caps and much more.
•◆【Easy to Use】 - These square tube end cap plugs would offer a neat safe finish to tube ends and prevent dirt and dust ingres. It's easy to use that no tools needed. You are able to install by hands within minutes. They serve as a long-lasting solution for many household or outdoor projects.
•◆【Multipurpose】 - The tubing insert cover is widely used to chair legs, bench feet, table legs, bar stool foot, and fences/fencing railing posts, furniture end covers, fitness equipment end covers, gate rail post covers, trailer frame ends, pole pipe rod caps, metal bike rack fittings, wrought iron steel finishing plugs, or any sqaure opening.

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$4.81

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M METERXITY

M METERXITY 10-Pack Tubing End Caps, 1/2 x 1/2 Inch Plastic Square Hole Plugs Inserts for Chair Leg/Bar Stool/Fitness Equipment, Chair Glides Fence Plug Floor Protectors

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•[Multipurpose Use] - Rectangular tubing plugs are suitable for most metal pipe end protection, such as chairs, fences, car frame accessories, boat trailer tube ends, fitness equipment end caps, mechanical pipes, metal bumper pipes, and other pipes, which can prevent wear and tear and metal pipe rust
•[Durable Plastic Pipe Cap] - The plastic pipe cap is composed of premium polyethylene plastic, which is highly resistant to corrosion and wear and excellently waterproof, preventing rust inside the metal pipe
•[Size & Package] - The dimensions of the square plastic caps are 1/2 x 1/2 x 5/9 inches / 13 x 13 x 14 mm(L x W x H). The package includes 10 pcs square plastic caps
•[Advantage] - The Rectangular plastic inner plug has ribs on the insert part to ensure a secure fit with the rectangular tube without falling out. If the tube wall is too thick, you can also trim it to the right size and knock it in
•[Installation] - The metal furniture legs glide plug It is easy to install and remove. It can be easily inserted into metal ducts with a gentle push or a tap with a small hammer

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$5.99

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OUTWATER

Outwater Plastic 2-1/2" Square Insert End Caps for Tubing, Finishing Plug for Square Tubing Chair Glide, Floor Protector, Fits Multi Gauge Tubing, USA Made, 10 Pack

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•PACK OF 10 - These square end caps are designed to fit inside 2.5" square, 14 - 23 gauge tubing. *not intended for iron pipe*
•MULTIPURPOSE - Perfect for covering railing posts, gate posts, fence posts, chair legs, table legs, fitness equipment, patio furniture, stools, tube closures, and pipe plugs; Ideal for a wide range of applications.
•HEAVY DUTY INDUSTRIAL STRENGTH - Made of strong low density Polyethylene in textured Matte Black finish.
•EASY INSTALLATION - No adhesive or screws required. End cap can be easily pushed into tube hole with hand or mallet.
•GREAT PROTECTION - Prevents dirt and moisture from entering tube. Protects floors from scuffs and scratches by working as furniture glide. Smoothly glides on hardwood, carpet, linoleum.

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$9.99

$13.99

-29%

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