"Professional-quality socket set, made with chrome molybdenum steel. U.S.A. Specialized Pieces qty. 0, Drive in. 3/8, Material Type Chrome molybdenum, Measurement Type Standard SAE, Point 6, Storage Type Socket holder, Pieces qty. 8, SAE Socket Size in. 5/16-3/4. Includes 6-pt. standard impact sockets in 5/16in., 3/8in., 7/16in., 1/2in., 9/16in., 5/8in., 11/16in. and 3/4in. sizes Clip rail for storage"