The LockNLube^® Grease Coupler is compatible with all grease guns and grease fittings. It does not leak once locked on and will not pop off under pressure. No hands are needed to align or hold the coupler in place while greasing. You have both hands free to operate your grease gun and know that the grease will go in, not on, your machine. Guaranteed.

Coupler Won't fit?

Before assuming your grease gun has incompatible threads, first check to be sure that the old coupler is removed completely. The LockNLube® Grease Coupler uses a standard 1/8" NPT thread. To install, you'll first need to remove your old coupler. On certain grease guns, it is easy to remove the front half of the old coupler, but the back half is still attached to the grease hose and can be difficult to remove. WE are finding this is especially common on battery grease guns.

In this case, the LockNLube® Grease Coupler won't thread on because the internal threads from the old coupler are not 1/8" NPT. To get the old coupler off, you may need to use some combination of a vice, pliers, a blow torch, a lot of elbow grease, and maybe a few of your favorite curse words./p>