IJO1267 Features: * This versatile tool easily locks and holds both camshaft sprockets firmly in place * Unique design uses knurled pins to hold against the inside of the cam sprockets * The two parallel bars float which allows the knurled pins to align with the sprockets * Preserves the engine timing during belt or chain replacementDual Overhead Cam Lock Tool locks Camshaft sprockets in place during belt or chain replacement. * Dual Overhead Cam Lock Tool Warranty: * Lifetime warranty does not cover abuse