Product Description The OEMTools 7 Piece 3/8 In. Drive External Star Socket Set is ideal for external star drive belts. It features heat-treated chrome vanadium steel sockets for strength and durability and durable chrome plating for rust resistance. From the Manufacturer This Seven Piece Internal Torx Socket Set is made from high strength, heat-treated chrome vanadium and comes in a convenient clip rack. Includes sizes: E6, E7, E8, E10, E12, E14, E16.