Service Kit, Application Removal Of Studs Commonly Found on Head Bolts And Exhaust Manifolds, Material Alloy Steel, Number of Pieces 8, For Use With Ratchet, Includes 6 mm - 3/8 in Dr., 8 mm - 3/8 in Dr., 10 mm - 1/2 in Dr., 12 mm - 1/2 in Dr., 3/8 in - 1/2 in Dr., 7/16 in - 1/2 in Dr., 5/16 in - 3/8 in Dr., 1/4 in - 3/8 in Remover Sockets, Sockets Included -