Best Locknlube in 2026

LOCKS ON, DOES NOT LEAK: Grease goes in, not on the machine. LockNLube’s unique sliding sleeve ensures that when the jaws are locked onto the Zerk, a leak-proof seal is created.

ONLY REBUILDABLE COUPLER: All LockNLube couplers include a rebuild kit! Simply replace the seal and jaws and it is as good as new = lowest lifetime cost.

COMPATIBLE WITH ALL GREASE GUNS AND ZERK FITTINGS: 1/8" NPT works with all grease guns and manufacturers – pneumatic, manual, or electric. Locks on to all Metric and SAE specification Zerks.

Rated to 10,000 PSI! Locks on, stays on. Does not leak once locked on.

Hands free - does not pop off under pressure. Easily release from fittings with the thumb lever, even at extreme pressure.

Fits all standard Grease Guns - 1/8 NPT fitting. Fits all SAE and Metric Zerk fittings. Simply replace your existing coupler.

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

Contains :50 yellow caps

Integrated collar slides onto the fitting, keeping the cap safely attached.

Fits all standard grease fittings (SAE and metric)

Develop over 10,000 PSI without batteries

Patented pressure return valve easily clears pressure from the hose and returns it to the canister with no mess.

Includes the LockNLube Grease Coupler, 10 ft. hose, and the G.Scoop to easily and cleanly refill with bulk grease

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.

The most common metric taper grease fittings

48 fittings total

Ten 6mm x 1mm, Ten 10mm x 1mm, and Six 8mm x 1mm Six 45 fittings: 6mm x 1mm Twelve 90 fittings: Six 6mm x 1mm and Six 8mm x 1mm LockNLubebrand

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

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

Simply use an adaptor for troublesome grease fittings

Unique Features: Includes a LockNLube Grease Coupler

Locks on, stays on

Does not leak

Delivers up to 8,000 PSI

LockNLube Grease Coupler included

Integrated handle clip and Loop & Lock mean clean and easy storage and carrying

Engineered for high-vibration environments Heavy duty spring easily holds grease gun in rough conditions Holds hand-operated and cordless grease guns Four large-diameter bolt holes make for easy mounting

Includes most common SAE and metric grease fittings

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

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

Easily install and extract grease fittings

Brand : LockNLube

LockNLube Grease Fitting Multi-Tool (Large)

Easily install and extract grease fittings

Fits 1/4"-28, M6x1, M8x1 and other fittings with hex size 5/16" (7mm) and 3/8" (9mm)

Easily grease sealed bearings Insert needle under or through rubber cover to apply grease to bearings

Snaps directly onto a jaw type coupler to reach grease fittings in very tight spaces

Works best with the LockNLube Grease Coupler

Quickly flushes out old grease and repacks bearings

Fast, efficient, and thorough

Cone diameter is 4 1/2”

LockNLube Grease Coupler

12” Heavy Duty Hose

In-line Hose Swivel

Brass adapter threaded M 10x1 (f) to 1/8" NPT (m)

Certain Milwaukee 18v grease guns ship with a hose that has a metric 10x1 working end. If you try to replace the coupler and the new coupler does not fit, you need this adapter

NOT ALL MILWAUKEE GUNS ARE AFFECTED. Unfortunately Milwaukee has not said which batches ship with metric hoses and which ship with NPT ends, as they are supposed to. You will need to check the threads or attempt to replace the coupler to know which hose you have.

Access hard to reach grease fittings with this 12" extension hose

Includes a heavy-duty 4-jaw grease coupler

For hand-operated grease guns

Working Pressure: 10,000 PSI

Length: 48"

Thread Type: Working End: 1/8" NPT, compatible with the LockNLube and all other grease couplers. Base End: 7/16"–28 UNEF. Compatible with brands such as Lincoln and Dewalt.

Pressure return system allows for clean and easy disconnect from clogged fittings

Combo air bleeder valve and Loop & Lock Storage Zerk means clean and easy storage.

The Original Patented LocknLube Grease Coupler

Easy Priming: Unique plastic follower and vacuum suction means easy priming every time

High pressure: 10,000 PSI max. Pressure remains constant up to 40,000 priming cycles

No Leaks: Reusable plastic follower means no dripping grease. LockNLube coupler means no leaks from the top.

Makes it more convenient to get the LockNLube Grease Coupler into tight spaces

Coupler & Swivel are both rated to 10,000 PSI - use with any grease gun

Heavy-duty construction withstands lateral forces - won't snap under pressure

Coarse Threads (7/16”–20)

Only 1.5 in. long

Heavy-duty construction withstands lateral forces - won't snap under pressure

World's original locking grease coupler.

Locks on, does not leak. Rated up to 10,000 PSI

Eight quick-connect adapters allow access to hard-to-reach grease fittings.

Patented 2-Piston Mechanism

Choice of Top or Front Discharge Port

Includes the LockNLube Grease Coupler

Fine Threads (7/16”–28) For Dewalt And Lincoln battery guns

Only 1.5 in. long

Heavy-duty construction withstands lateral forces - won't snap under pressure