Input Drive Size: 1/2" Drive Shape: Square Type: 12 Point Deep Socket Rail Set (ANSI) Includes: 4305A 12 Point Deep Sockets: 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16" Rail NOTE: Image shows 6-Pt Socket Set 4300A/10