Application: New smaller size Fits for Toyota four cylinder and for Chrysler New World Engine applications. Works on automobiles, motorcycles, and boats.A magnet is built into the main body of the tool to attract and fix the retainer immediately before it falls into the engine. Avoid any potential damage. Great Performance: Our tool fast removes and Installs Valve Keepers on most overhead valve engines with valve stems from 4.5 to 7.5mm and 7.9 to 9.5mm without removing cylinder head. Makes the disassembly and reassembly of valve components quick and easy. Easy To Use: .