OE/ Part number CR490、CR490-A;CR490-B;CR490-CSpecification Applicable Engine: compatible with compatible for GM Onix / Tracker / Compatible for Chevrolet 1.0 12V 3 cylinders, 1.2 12V Ecotec engine Package included 22mm control shaft toothed pulley actuator valve screw remove socket camshaft aligning tool flywheel locking tool crankshaft pulley holding tool Feature Function: use for camsahft aligning, locking flywheel & holding the cranksafht pulley when adjust engine timing or replace timing belt