• One-piece design maximizes strength and reduces breakage

• Chamfered ends provide easy engagement of the drive tool and fastener

• Suitable for use with pneumatic and electric impact wrenches

• Specially heat treated for impact use to provide long life, safety, and durability

• Drive end features pin retention hole and groove

Contents Included:

1/2, 9/16, 5/8, 3/4, 13/16, 7/8, 1, 1-1/8, 1-1/4