General description Torx plug set includes a variety of internal Torx sockets designed for use with star/stud fasteners. This set is ideal for working on cars, trucks, appliances, lawn mowers, machinery, and other applications requiring precise fastening. Technical specifications Drive sizes: 1/4 inch, 3/8 inch, 1/2 inch Socket sizes: M4, M5, M6 (1/4 inch); M8, M9, M10, M12, M14 (3/8 inch); M16, M18 (1/2 inch) Material: Chrome vanadium steel with a mirror polish Other information Includes a sturdy blow-molded storage case for easy organization and identification of sockets Chamfer design on each bit head for easier insertion and reduced wear