3/8" Drive, made of Chrome Vanadium steel. Includes sockets and extensions required to remove/install spark/glow plugs and oxgen sensors on most modern vehicles.
Size: Spark plug 14mm, 16mm, 16mm(thin wall), 21mm.
Glow plugs, 8mm, 10mm, 12mm with double pin universal jont.
Oxygen sensor: 22mm.
Extension bar, 3"(75mm), 10"(250mm)