The Proto 3/8" Drive 18 Piece 12 Point Professional Socket Partial Set is a high-quality tool set designed for automotive and hand tool use. This set includes a variety of sockets in a 3/8" drive size, featuring a 12-point design for a secure grip on fasteners. The set comes with extensions and universal/swivel sockets for added versatility, all neatly organized in a case for easy storage and transport. The manufacturer part number is 52136 and the set is compliant with California Prop 65 regulations.