1.Material: The grease coupling is made of high-quality alloy steel, and the spring is well wrapped to ensure that the coupling will not leak, very tight and durable. 2. Simple operation: The grease coupler is easy to install and operate. The grease coupler can be aligned or held in place simply by depressing the spring, no manual operation required. 3. Reinforced clamps ensure lasting and stable performance, and high-quality gaskets ensure no leakage before and after the highest pressure 4. Precision Engineering Design: The latest version of the seventh generation. Upgraded design, push operation, avoid axial bending. 5. Compatible Tools: Works with all grease guns - 1/8" NPT fitting. Works with all types of grease guns, pneumatic, manual and electric. 6.Suitable for all grease guns: Suitable for all grease guns 1/8 inch NPT connection. It works with all types of grease guns - air, manual and electric. Specification: Color as shown Material: Alloy Packing weight: 260g Packing list: 1*Grease gun clutch