Low profile 9-pc. 1/4in.- and 3/8in.-drive Torx socket set is designed for tight working areas. U.S.A. Drive (in.): 1/4, 3/8, Pieces (qty.): 9, Torx Sockets (qty.): 1/4in. Drive (T10, T15, T20, T25, T27, T30), 3/8in. Drive (T40, T45, T50 ), Material Type: Forged Alloy Steel Forged alloy steel 1/4in. sizes include T10, T15, T20, T25, T27 and T30 bits 3/8in. sizes include T40, T45 and T50 bits