Cruiser Accessories Stainless Steel Self-Tapping Fasteners can attach a novelty/license plate, frame, shield, mount and/or fastener caps to a vehicle - choose one or all of these options! Tap your way into saving time with these rust proof, durable and efficient fasteners. Made of stainless steel and can be used with either domestic or import vehicles. Includes 4 tapping fasteners (6.35 mm x 25 mm (1/4" x 63/64"). Easy installation with basic tools.