Features: Using a High Pressure Grease Coupler to lubricate a joint or bearing enables better precision, pressure and flow control in applying the grease and delivering it to areas that would otherwise be difficult to access. 【Easy To Use】The grease tool fitting can be lock and release quickly, easy and convenient. 【Dual Handles】Dual handles are designed to save effort when filling oil, and the fine texture of the handle adds friction to the palm to prevent accidental slippage 【Strong & Durable】Internal high quality carbon steel material, surface galvanized, strong ans durable, which is perfect for long time use without breakage, leakage, warping or typical wear and tear. 【Leak-free Design & High Pressure Up To 10000 PSI】six-lobe lock cylinder grease nipple, more tightly clamped prevent leakage even at extreme pressures of 10000 PSI.No more wasted grease mess everywhere. 【High Compatibility】With universal national standard M6/M8/M10/M12/M14 grease nipple, 1/8" NPT thread at the end. It is widely used for trailer, tractor, truck, UTV, motorbike, boat, etc. HOW TO USE: 1. Lock on the grease injection nozzle of the grease gun. 2. Clip it on the oil nozzle and loosen it. 3. After docking, you can easily inject oil. Specifications: Color: silver Material: internal high quality carbon steel material, surface galvanized Pressure: 10000PSI Package Included: 1x Grease Coupler 1x 11.8" Hose 1x 45° Grease Nozzle Adapter for M8 1x 90° Grease Nozzle Adapter for M8 1x 180° Grease Nozzle Adapter for M8