Features 1. Locking and Sealing: Upgraded jaw design with a high-quality sealing gasket securely locks onto zerk fittings and prevents leakage. Easy to lock and release. 2. One-Hand Operation: Ergonomic handle with anti-slip design and smooth retraction mechanism allows one-hand operation. Once attached to a zerk fitting, it stays in place, freeing both hands to operate the grease gun. 3. Durable Construction: Made of metal for long-lasting performance. 4. Wide Compatibility: Compatible with most standard grease guns, including mini and small grease gun models. Ideal for use with excavators, bulldozers, cars, factory machinery, tractors, harvesters, and other heavy equipment. Specification Material: Metal Color: Silver Size: 9 x 1 cm Weight: 140 g Style: Single handle Package Includes 1 x Grease Gun Coupler 1 x 15-Inch Spring Flex Hose