▲ 1. Leak-free Design: Enhanced jaws and premium sealing gaskets prevent leakage even at extreme pressures of 10000 PSI, ensuring long-time service and stable performance. No more wasted grease mess everywhere. 2. Good Springs: The springs perform well and guarantee smooth sliding throughout their entire life cycle. 3. Double Handle: With the double handle design, it is more labor-saving when oiling. The fine texture of the handle ensures friction with the palm of your hand and avoids accidental slipping. 4. Easy To Use: The grease tool fitting can be locked and released quickly, easily, and conveniently. ▲ Product Name: Grease Tool Coupler Material: stainless steel Size: 9 x 5 cm/ 3.5 x 1.96 inches Pressure: 10000 PSI ▲ 1 x Grease Tool Coupler OR 1x Grease coupler with hose