ATC Automotive Valve Seal Remover and Installer Kit 11pc Valve Seal Remover And Installer Kit For Removal Of Valve Stem Seals On Overhead Camshaft Engines Valve Pliers Reach Down Around The Valve Stem Into The Confined Areas Of The Seal To Grip It For Removal / Installation Knurled Ends On The Adapters Provides Maximum Grip In Oily Conditions Adapter Sizes Incuded in set: 5mm, 5.5mm, 6mm, 6.6mm, 7mm, 8mm & 3/8 Also includes: Valve Stem Pliers, 2pc Deep Seal Driving Sockets For Seals, 6" Driver Handle & 7 pc Adapters