Does this work with Milwaukee grease guns?

This does not work on the older Milwaukee m18 grease guns. They used a metric threaded hose on the older ones. The newer guns have standard thread and it will fit those. Take the current connector off the end of your grease gun hose. If the first 1/8 inch of the hose is not threaded, then you have a metric hose and this lock lune will not fit.

Where is this product manufactured?

It is a quality product made in South Africa by Gurtech.

After installing it, I couldn't depress the gun's pump. What did I do wrong?

Between myself and friends we have successfully installed five of these fittings without any problems. As per the other reviews, I would first check your gun to see if was in fact pumping grease, then reinstall the coupler and try again, before you put it on a fitting. Could be that the fitting jerk that you tried it on was frozen. If it still does not allow grease to flow, it is defective and you will need to return it.

It is just the fitting or does it include the flexible line?

It is just the fitting. The hose was included to give context and sense of scale.

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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.

Product ID: 3992963

Details

Brand
LockNLube
Global Trade Identification Number
Item dimensions L x W x H
3.45 x 0.63 x
Manufacturer
LockNLube
Material
Steel Rubber
Maximum Operating Pressure
10000 Pound

💪Rated up to 10,000 PSI pressure

🔒Locks securely on Zerk fittings

🔧Rebuildable with spare kit included

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Description

🔒 Lock it tight, grease it right—never miss a beat on maintenance!

UNIVERSAL COMPATIBILITY - Fits all 1/8" NPT grease guns—manual, pneumatic, or battery-powered—for seamless upgrades.
LOCK LOAD WITH CONFIDENCE - Patented locking jaws keep the coupler firmly attached—no more grease spills or fumbling hands.
BUILT TO LAST BUILT TO REBUILD - Includes a spare rebuild kit, doubling your value and extending tool life effortlessly.
PRECISION FIT FOR EVERY MACHINE - Works flawlessly on all SAE & metric Zerk fittings with a full range of adapters.
EFFORTLESS OPERATION UNDER PRESSURE - Thumb lever design allows quick attach and release, even when grease lines are pressurized.

The LockNLube Grease Gun Coupler is the world’s best-selling original locking coupler, engineered to securely lock onto all Zerk fittings and rated for up to 10,000 PSI. Designed for professionals who demand precision and durability, it features a patented locking mechanism, universal 1/8" NPT compatibility, and comes with a spare rebuild kit for extended use. This tool ensures grease goes exactly where it should—inside your machinery, not on it—making maintenance faster, cleaner, and more efficient.

Specifications

ASIN	B00H7LPKKU
Batteries Included?	No
Batteries Required?	No
Best Sellers Rank	#380 in Automotive ( See Top 100 in Automotive ) #4 in Fuel Transfer & Lubrication Products
Color	Silver
Customer Reviews	4.7 4.7 out of 5 stars (32,090)
Date First Available	December 9, 2013
Included Components	Just the item
Is Discontinued By Manufacturer	No
Item Package Quantity	1
Item Weight	4 ounces
Item model number	1/8\\\" NPT
Manufacturer	LockNLube
Material	Metal
Maximum Pressure	10000 Pound per Square Inch
Part Number	GC81011
Product Dimensions	3.45 x 0.63 x 1.66 inches
Size	NPT With Spare Rebuild Kit
Warranty Description	1-Year Warranty

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52797CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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