Improved design- This grease guns coupler adopts improved design, push operation, avoids axial bending. The longer version makes the design more meaningful. Easy installation. Maximum working pressure is 690 bar. Tight Nozzle- The sealing ring of the nozzle is made of conical rubber to ensure that the coupling does not leak, high pressure resistance, six-lobe lock, tight lock without oil leakage, holding the handle gear transmission, very tight and durable. Simple Operation- With single handle design, the grease coupler is labour-saving when oiling. The fine texture of the handle is uneven to ensure friction with the palm of your hand to avoid accidental slipping. Environmentally Friendly- No need to pay attention when applying oil. No more fat, no more waste. Suitable for All Grease Guns- Non-standard M10 M8 M6 GB grease heads are universal, suitable for all grease presses 1 or 8 inch NPT connection. It is suitable for all types of grease gun - pneumatic, manual and electric. There are single handle and double handle for your choice. Double HandleWith double handle design, the grease coupler is more labour-saving when oiling. The fine texture of the handle is uneven to ensure friction with the palm of your hand to avoid accidental slipping.