Moroso Performance Valve Checking Springs Features: Simplifies The Task Of Cam Decreeing Simplifies Checking Valve To Piston Clearance Can Be Installed By Hand w/o Compression Tools 7/8 in. Dia. And 2 in. Height Sold As Set Of 8 Height: 1.25 Width: 5.38 Length: 7.19 Weight: 0.15 Electrical Outlet Plug Type: Pit and Mechanic Gear