Top 10 Best lock n lube grease fittings in 2026

Last Updated - 6/26/2026

🏆Best Choice

LockNLube

LockNLube Grease Gun Coupler locks onto Zerk fittings. Grease goes in, not on the machine. World's best-selling original locking grease coupler. Rated 10,000 PSI. Long-lasting rebuildable tool.

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•LOCKS ON, STAYS ON, WON'T LEAK—LIKE HAVING AN EXTRA HAND! No need to hold the coupler in place while trying to grease your machinery. The LockNLube Grease Coupler locks on tight and lets you use both hands on your grease gun.
•THE ONLY REBUILDABLE LOCKING COUPLER: We include a spare rebuild kit! It's like getting two couplers for the price of one.
•1/8" NPT COMPATIBLE WITH ALL GREASE GUNS - BATTERY, PNEUMATIC, MANUAL: Whether you are using Grandpa’s old Alemite lever grease gun, or the latest battery or pneumatic grease guns, the LockNLube Grease Coupler can be added to upgrade your grease gun.
•WORKS ON ALL ZERK FITTINGS, SAE & METRIC with a full lineup of adapters to reach any grease fighting on any machine!
•EASY TO USE: Press the thumb lever to open the LockNLube’s patented jaws and attach to the Zerk. Release the thumb lever and the LockNLube locks on tight! Press the thumb lever again to easily release from the Zerk, even under pressure!
•RATED UP TO 10,000 PSI
•BEST BUILT GUARANTEE: The LockNLube Grease Coupler is covered by our unconditional 1-year warranty

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$34.99

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OURU

OURU 240PCS Grease Fittings Assortment,SAE & Metric Zerk Grease Fittings Straight 45 90 Degree with Wrench Kit(7-11mm) for Grease Gun

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•[GALVANIZED STEEL MATERIAL] Durable,it maintains reliability in terms of corrosion, rust and oxidation resistance even in harsh outdoor environments
•[STANDARD SAE&Metric SIZES] Various sizes including 1/4", 1/8", M6, M8 and M10 straight, 45 degree, 90 degree, these straight and angled grease gun fittings meets your needs for different applications
•[CONVENIENT USE] No disassembly required!The grease nipple quickly connects the grease gun to the interior of the machine and provides lubrication, effectively improving work efficiency
•[STURDY STORAGE CASE] Grease zerk kit comes with well-designed label, each size is separated by thick partitions and placed in different compartments.It makes storage and portability easy, preventing it from becoming cluttered or loss
•[WIDELY USE]Grease zerk fittings equipped with wrenches in five different sizes,more easier to use on automotive and industrial.Perfect for professionals, repairers

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$34.99

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LockNLube

LockNLube 90 Degree Grease Coupler Adapter

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•Spring-loaded collar for extra-sturdy connection
•Easily connect to LockNLube and other couplers when needed
•Three hardened steel jaws, rubber seal, and check valve make a tight, reliable connection
•90 degree right angle adapter
•Perfect for tight spaces and hard-to-reach fittings

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$16.99

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LockNLube

LockNLube Heavy-Duty Pistol Grip Grease Gun. Includes our patented LockNLube® Grease Coupler (Locks On, Stays On, Won't Leak!) plus a high-quality 20" hose and in-line hose swivel

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•Includes the LockNLube Grease Coupler - Locks On. Stays On. Doesn't Leak
•Loop & Lock Storage Feature Keep You Clean
•20" Heavy Duty Hose and In-line Hose Swivel
•Rubber Grip and Ergonomic Handle
•Rated up to 5,000 PSI

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$75.99

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LockNLube

Push-on Slotted Right Angle 90 Degree Grease Coupler

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•Simply use an adaptor for troublesome grease fittings
•International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.
•Alow-profile 90 adaptor for hard-to-reach grease fittings Creates a leak-free seal with your LockNLube Grease Coupler Easily connects to all jaw-type couplers No need to keep different couplers on different grease guns

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$11.99

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LockNLube

LockNLube 8-Piece Quick Connect Greasing Accessory Kit. Complete grease fitting connection kit. Reach any grease fitting on any machine. The rip-stop case keeps tools clean and portable.

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•Rip-stop case can be rolled and secured with attached strap to keep tools clean and portable
•Grommets allow hanging for easy access to the tools
•All tools include a Zerk fitting in the back for easy connection and release from LockNLube or traditional, grease coupler
•Save 15% vs. buying all 8 separately!
•Keep all your adapters handy and be ready to reach any fitting on any machine!

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$80.99

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LockNLube

LockNLube Narrow Needle Dispenser

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•Extra reach for hard to reach grease fittings
•Snaps directly onto a jaw type coupler to reach grease fittings in very tight spaces
•Works best with the LockNLube Grease Coupler
•Delivers a fine line of grease for shafts and other applications
•For hand-operated grease guns

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$11.99

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LockNLube

LockNLube Complete Grease Fitting Replacement Kit - SAE and metric Zerks, multi-tools, fitting caps

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•Straight grease fittings in four sizes (10 each): 1/8” NPT, 1/4”-28 SAE-LT, 6x1 metric, 8x1 metric
•90 degree SAE fittings (5 each): 1/8” NPT, 1/4”-28 SAE-LT
•Two multi-tools allow easy removal and installation of all sizes of grease fitting, even if broken
•20 plastic caps keep grease fittings clean and help them last longer
•Bright plastic case keep parts clean and easy to find, even on the job site, or the back of a dark truck

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$64.99

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LockNLube

LockNLube LNL141 SAE Grease Fittings Set

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•The most common 1/8" NPT and 1/4"-28 taper fittings
•80 fittings total
•1/8" - 27 Straight, Qty = 25 - 1/4" - 28 Straight, Qty = 15 - 1/4" - 28 45° Angle, Qty = 10 - 1/8" - 27 45° Angle, Qty = 10 - 1/8" - 27 90° Angle, Qty = 10 - 1/4" - 28 90° Angle, Qty = 10
•LockNLube brand
•Durable plastic case keeps fitting organized

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$39.99

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LockNLube

LockNLube LNL127 Seal-Off Grease Adapter

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•Used for lubricating cars with grease plugs, chainsaw tips
•Use with grease plugs or ports that do not have Zerk fittings
•Quickly attach this adapter when needed
•The grease fitting in the back of the adapter easily locks into your LockNLube grease coupler
•For use with the LockNLube Grease Coupler

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$10.99

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