Impact Wood Screws • Ideal for use with Impact Drivers. • Milling shank helps clear hole in fixture. • Part threaded from 40mm to eliminate jacking of fixture • Double type 17 point for immediate start in all timbers. • Driver bit included Impact Wood Screws Ideal for use with Impact Drivers. Milling shank helps clear hole in fixture. Part threaded from 40mm to eliminate jacking of fixture • Double type 17 point for immediate start in all timbers. Driver bit included