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 too

Manufacturer : LockNLube
Part Number : GC81011
MAX PRESSURE 10,000 psi (690 Bar). Locks on, stays on, won't leak.
ZERK COMPATIBILITY The Floating Jaws allows the LockNLube Grease Coupler to adapt to all DIN and SAE specification Zerks (grease nipples).
COUPLER THREAD ⅛” NPT female thread compatible with all grease guns - battery, pneumatic, manual
DIMENSIONS L: 3½ x W: 5/8 x H: 1⅗ In (L: 88mm x W: 16mm x H: 41 mm)
DIAMETER (FRONT OF COUPLER) 5/8 in (16 mm). Fits most recessed grease fittings (Zerks). ~1mm larger than standard coupler
WEIGHT 4 oz. (100 grams)
GREASE GUN COMPATIBILITY Works with all grease gun types: pneumatic, manual, and electric.
SEAL Durable nitrile rubber seal for longevity under high pressure
LOCK-ON MECHANISM Four hardened steel jaws are resilient under high pressure. Patent protected.