1. **Features** - Locking and Sealing: The upgraded jaw design with snap - locks and sealing washers can lock onto the grease fitting and prevent leakage. They are also easy to lock and unlock. - One - Handed Operation: The single handle with anti - slip design and a smooth retraction mechanism supports one - handed operation. It is ergonomic and labor - saving. Once locked onto the grease fitting, it stays in place, enabling both hands to operate the grease gun freely. - Wide Compatibility: Our grease gun coupler is compatible with many grease guns, mini - grease guns, and small grease gun ends. It is suitable for excavators, bulldozers, cars, large factory equipment, tractors, harvesters, etc. 2. **Specifications** - Material: Metal - Color: Silver - Dimensions: 9 x 1 cm - Weight: 140 grams - Styles: Single - handle, Double - handle 3. **Package Contents** - 1 grease gun coupler - 1 15 - inch spring hose