Quickly removes and installs valve keepers on most overhead valve engines. Makes valve component disassembly and reassembly fast and easy. Magnet in tool body captures keepers for quick removal and valve disassembly. Made by high quality metal, durable in use. Stable characteristics, high reliability. Can be used on the car or bench. This professional-quality valve spring compressor tool kit can be used for automobiles, small marine engines and most motorcycle engines. The range of adapter sizes makes this kit one of the most versatile on the market because it can remove and compress springs on most cylinder heads. This tool kit allows you to install the valve spring correctly because it can compress the spring more easily. Instructions for use First install the valve stem, spring and spring seat into the cylinder head, Pad the cylinder head with a hemispherical rubber gasket, and put the valve lock piece into the spring seat, Then press the installer on the spring seat, Press down by hand to install the valve. Instructions for use: First install the valve stem, spring and spring seat into the cylinder head, Pad the cylinder head with a hemispherical rubber gasket, and put the valve lock piece into the spring seat, Then press the installer on the spring seat, Press down by hand to install the valve. Specification: Material:metal Colour:black Notice: Shooting light and different monitors may cause the color of the objects in the picture to be slightly different from the actual object. The allowable measurement error is +/- 1-3cm. Package includes:1pair Motorcycle valve separator tool