Mixed Drive Size External Torx Plus Socket Set 9 Pieces by Lisle®. Nine of the Most Popular Torx Plus® Socket Sizes for Automotive Applications. External Torx Plus® applications include body panels on newer Ford trucks with aluminum bodies and seats on GM trucks. Standard Torx® sockets will not fit Torx Plus®fasteners. Three smaller sockets are 1/4″ drive five sockets are 3/8″ drive and the largest socket is 1/2″ drive.