14-Piece Heavy-Duty Tamper Proof TORX Star Socket Set Premium-grade heavy duty sockets for tamper-proof TORX - star fasteners Heat-treated and hardened Chrome Vanadium steel to resist stripping, cam-out Includes chrome steel clip racks to keep organized in tool box or mount on workbench 1/4" drive: T-10, T-15, T-20, T-25, T-27 and T-30; includes 3/8" to 1/4" adapter 3/8" drive: T-40, T-45, T-47, T-50, T-55 and T-60; Manufacturer's Lifetime Warranty