Six-petal lock pawlUpgraded to a six-petal lock pawl and high-quality sealing gasket, which is enough to lock the lock and prevent leakage, easy to lock and release. Single handle, one-hand operationOur grease gun coupler is a single handle, which can be operated with one hand, which is ergonomic and labor-saving. Small corners of the operating space can also be reached and locked with one hand. Quality upgradeOur grease gun head is made of alloy stainless steel, which is more durable, and the thicker spring provides a stronger locking force, which can prevent leakage even under extreme pressure of 12000 PSI. Save Time, Save Money, Save FuelUpgrade your grease gun with our grease gun coupler and put an end to waste and confusion. One person can also do the oiling, making your oiling job easy and fun. Compatible with grease guns and accessoriesThe grease gun coupler is compatible with all 1/8" NPT standard grease guns, mini grease guns and small grease gun tips. It is an excellent grease accessory especially for Excavators, bulldozers in construction sites, various cars in auto repair shops, large equipment in factories, tractors, harvesters in farms, etc.