OTC Tools OTC 6180 9 Piece TORX Plus Bit Socket Set. TORX Plus fasteners are less pointed than standard TORX fasteners, and these are the only bits available for replacing them. Made from superior S2 steel to meet or exceed torque specifications. All bit sockets are a 2-piece design..20% stronger than one piece style for longer life. 1/4" and 3/8" square drive sockets. Covered by OTC's Lifetime Marathon Warranty. Set includes: TP10, TP15, TP20, TP25, TP27, TP30, TP40, TP45, TP50 bit sockets.