LOCK AND SEAL - Grease coupler jaw design makes it easier to open and the grease fitting, reinforced jaws and high-quality sealing gaskets long-lasting and stable performance, no leaks even at 17,000 PSI extreme pressure. High Quality - Made of high-quality refined iron, it can all-weather indoors and outdoors, stable and reliable. One-Handed Operation - Double handle anti- design and retract mechanism allow for one-handed operation, easy to install/remove. locked onto the grease accessory, it stays open and frees both hands to operate the grease . WIDE APPLICATIONS - Compatible with 14mm standard, , battery, pneumatic, manual grease and fittings, it also fits M6/M8/M10/M12/M14 grease fittings, just replace your existing grease coupler. Colour:Chrome Material:iron Package Contents: 2 x Grease Nipples Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.