Double-Ended Flip Sockets Offer 2 Hex Sizes in Each Socket for the Removal of Standard and Damaged Lug Nuts Found on Many Vehicles. 6-point impact sockets are made from chrome moly steel with a black oxide finish. Set includes a punch, 18.5mm/19.5mm, 21mm/21.5mm, 22mm/22.5mm. Comes in blow molded case for storage.