Dual Cam Clamp Overhead Camshaft Timing Sprocket Gear Locking Tool Universal with 4 Locks Designed To Lock Single, Dual, Twin and Quad Camshafts for Timing Belt Replacement or Valve Train repair/adjustment Fits On To Sprockets And Extends To Lock on To Sprocket Teeth Includes 4 single cam locks Suitable For Locking Between Cam And Diesel Injunction Pump Sprockets Universal slider for many engine applications