Introducing The LockNLube Pressure Return Valve! A must-have for your cordless grease gun! The LockNLube Pressure Return Valve allows grease to flow from the hose back to the barrel with just the twist of a knob. No more pressure locks and messy, unsafe disconnections. Eliminates waste and extends coupler life. Installs in minutes!  Buy as a bundle with a Swivel and a LockNLube® Grease Coupler and save 10%! #Milwaukee #dewalt #Lincoln  #holiday #giftguide #christmas #shopping#greasegun #locknlube #grease #greasecoupler #agriculture #farm #automotive #logging #tractor #equipment #tacticool #custom #greasefittingrelocation #zerk  #maintenance #airtools #tires #locknflate #airchuck #locking #construction #excavation