These AF impact crows foot spanner sets are made from INDUSTRIAL Quality Molybendium Steel. They are strong enough to use on a 3/8 inch Drive Rattle Guns and includes sizes 9/16, 1/2, 7/16, 3/8, 5/16, 5/8, 11/16, 3/4, 13/16, 7/8, 15/16 and 1 inch.



Part Number: kc11220