Notes: Thread size: M12 x 1.5. Hex size: 3/4" and 13/16" Dual Hex. Installation kit available. Kit contents: 4 locks and 1 key. Not for use on OEM steel wheels. Overall length: 0.775". This lock will not fit OEM plastic lug caps. Matching lock can only be purchased from GM Dealer. Cone seat under hub cap style wheel locks.