Features: Sturdy and Durable: Constructed of the highest quality steel material the grease coupler is durable and ideal for continuous use without breakage leaks warping or typical wear and tear. The springs well and guarantee smooth slig throughout their entire life cycle. Compatible with all grease tool and fittings; Fits all standard grease tool mini grease tool. Ideal for continuous use without cracks leakage warping or typical wear. It is suitable for all types of grease tool-pneumatic manual and electric. Small Size: This grease coupler is easy to use in narrow areas. Smooth retraction mechanism allows one-handed operation. Once the grease connector is locked onto the it will remain open freeing both hands to operate the grease tool. Notice: 1.Actual color may be slightly different from the image due to different and light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Material: steel Size: As picture show includes: 1x Grease Coupler "