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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 30,870 reviews
Condition: New
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$32.99 Why this price?

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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 Wednesday, Mar 5
Order within 1 hour and 54 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 grease gun tips 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! RATED UP TO 10,000 PSI
  • 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!

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: Wednesday, Mar 5

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
  • Affirm Pay in 4
  • 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

    • A must have in my opinion
Wow. Wish I knew about these sooner. Put this on my Holt grease gun, as I tore up a Bearing Buddy trying to remove their default coupler from the fitting. Used this for the first time today on my new Bearing Buddy's....... Wow, it worked like a champ. Clamped on, grease in, and just push the thumb clamp to release. Going to put one of these on my mini grease gun. Well worth the investment. Also cool that it comes with a rebuild kit. ... show more
Reviewed in the United States on February 2, 2025 by Ren
    • 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
    • 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
    • Works Great! Highly Recommend.
This is great product. Clamp onto the zirc and pump away. No more mess of extra grease - it all goes into the zirc. Wish I had this for the last 40 years!
Reviewed in the United States on February 6, 2025 by michael r.
    • Grease Cert clamp
I gave it 4 stars because I just got it. Made well and it works great. And I think it's going to have some longevity to it. Clamps on to the grease cert better than Expected and holds good.
Reviewed in the United States on February 22, 2025 by Mike Kirsch
    • High Quality. Just Works.
This is a quality grease coupler. Works as advertised. It's very easy to put on and take off the grease zerk. No seepage at all, which is the whole reason I bought it. My old twist type coupler leaked bad and was hard to put on and take off the zerk.
Reviewed in the United States on February 5, 2025 by SDW77
    • If it’s not working contact locknlube directly
I see most reviews are positive with the occasional review that doesn’t like the product because grease squeezes out the sides instead of going into the zerks. I also had this issue, but after contacting the company directly they sent a replacement. The new one works perfect, I greased 3 different suspension points this morning and it was a breeze, coupler grabbed the zerks and sent grease right in…no more squeaky suspension. So yea if your grease isn’t going in it’s likely a faulty unit you got, try getting a replacement and your experience should be much better ... show more
Reviewed in the United States on February 8, 2025 by Jelani Lewin
    • Didn’t realize how much I needed this
Review Image by brian stern brian stern
This thing saves a lot of time, minimizes waste and frees up a hand. At least 1/2 the fittings i need to grease are difficult to reach so being able to lock this on and use two hands is huge! Out of around 20 zerk fittings in the shop this fit all but one(admittedly that one is in a tight space and at a difficult angle). I will purchase another for my high temp bearing grease gun too. If you’re on the fence, get it, definitely worth it. ... show more
Reviewed in the United States on February 26, 2025 by brian stern brian stern

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