Wide Applications -- Suitable for most overhead valve engines, valve stems from 4.5 to 7.5 mm and 5/16" to 3/8". The new smaller size works for Toyota four cylinder and for Chrysler New World Engine applications. Easy To Use -- Makes valve component disassembly and reassembly quick and easy. Push or tap the tool with a hammer to remove valve keepers. The magnet in the tool body captures keepers for quick removal and valve disassembly. High Quality -- This valve keeper remover installer kit is made of top quality Aluminum Alloy, sturdy and durable, corrosion-resistant, anti-rust, oxidation resistant, provides longer service life. Secure Tool Grip -- 2 remover tools and 2 installation adapters have textured surfaces for a secure grip; Magnetic body keeps car and small engine valve spring compressor adapters in place for safer use After-sales Guarantee -- If there is any dissatisfaction with the product, you can contact us to deal with it. 36050 Valve Keeper Remover Installer Kit Valve Spring Compressor & Retainer Removal Tool