The Lisle External Torx Plus Socket Set, No 83100, includes nine of the most popular Torx Plus socket sizes for automotive applications. The Torx Plus works well on newer Ford trucks with aluminum bodies and seats on GM trucks. Standard Torx sockets will not fit Torx Plus fasteners. The three smaller sockets are 1/4" drive, five sockets are 3/8" drive and the largest socket is 1/2" drive.