Features 1. Locking and Sealing: Upgraded jaw design with secure snap and high-quality sealing gasket provides strong locking on zerk fittings and helps prevent leakage. Easy to lock and release. 2. One Hand Operation: Single handle with anti-slip design and smooth retraction mechanism enables one-hand operation. Ergonomic and reduces user fatigue. Once attached to a zerk fitting, it stays securely in place, freeing both hands to operate the grease gun. 3. Durable Construction: Made of metal for long-lasting performance. Silver finish resists corrosion and wear. 4. Wide Compatibility: Compatible with most standard grease guns, mini grease guns, and small grease gun ends. Ideal for use with excavators, bulldozers, cars, factory machinery, tractors, harvesters, and other heavy equipment. Specifications 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