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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.

    • Based on 30,791 reviews
Condition: New
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$32.99 Why this price?
Save $41.99 was $74.98

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30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

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View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Monday, Jan 27
Order within 5 hours and 6 minutes
Available payment plans shown during checkout

Features

  • LOCKS ON, STAYS ON, WON'T LEAKLIKE 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 Grandpas 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 LockNLubes 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

Manufacturer: ‎LockNLube


Part Number: ‎GC81011


Item Weight: ‎4 ounces


Product Dimensions: ‎3.45 x 0.63 x 1.66 inches


Country of Origin: ‎South Africa


Item model number: ‎1/8\\\" NPT


Is Discontinued By Manufacturer: ‎No


Item Package Quantity: ‎1


Batteries Included?: ‎No


Batteries Required?: ‎No


Date First Available: December 9, 2013


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Jan 27

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Why did I wait so long ?
This grease gun coupler works as advertised. For years I struggled to grease some odd sized fittings, often not being able to get the grease into the fitting properly. This coupler locks on and gets the job done quickly with no messy cleanup. This saves me time and frustration. Like I said, why did I wait so long? ... show more
Reviewed in the United States on January 5, 2025 by I. Garden
    • So effective and helpful!
Absolutely love this grease gun attachment. Frees up one hand to pump grease. Too often, greasing requires one hand to keep pressure on the grease zerk so the grease gun’s hose and fitting don’t pop off. This eliminates that problem. Also, I owned a Cub Cadet lawn tractor that had all of its grease zerk fittings pressed in, rather than threaded. Removing the press on style grease gun coupler would often pull the zerk right out of the hole, requiring the zerk to be hammered back in. Again, this quick, clamp on coupler eliminated that problem. Seemed a bit spendy at first, but now I feel it’s worth every penny. ... show more
Reviewed in the United States on September 19, 2024 by Jeffrey
    • Excellent product
Why did I wait is my question. Works like magic, easy on and off the fittings, doesn’t leak or come off until you decide to take it off. Buy one, they’re awesome.
Reviewed in the United States on November 7, 2024 by Trevor
    • A must for grease gun
Love this tool, makes greasing a breeze and ensures grease is applied properly. Highly recommend and also recommend the air chuck too
Reviewed in the United States on January 10, 2025 by Matt Schondra
    • Doesn't Always Work
I've used this device for nearly three years now. At first it worked like magic! I loved the way it would hook on to the zerk and not lead. Unfortunately, while it still hooks onto the zerk, the grease doesn't go into the fitting, it merely squirts out the side. Something about it doesn't force the zerk open any more. Need a new one, I suppose. Life expectancy must be about 3 years. ... show more
Reviewed in the United States on January 10, 2025 by Joseph Sapp
    • Awesome!!
Saves tons of time and works great!! Way better than messing around with standard grease gun fittings that leak tons of grease.
Reviewed in the United States on January 20, 2025 by Chad
    • Game changer
Great product, I used it today and it really makes it easier. It is the most expensive adapter but it is worth it.
Reviewed in the United States on December 28, 2024 by gerson galvis
    • Works incredibly well
For years I’ve been irritated by the typical grease lock. It’s difficult to get on and off, leaks grease if it’s not at the perfect angle….ive got to say that this addition does EXACTLY what it says it will. It works so well, easy to grab on and off and doesn’t leak out. I rarely write reviews but had to make sure others know how well this works!!! ... show more
Reviewed in the United States on December 22, 2024 by Jeremy

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