The Addax 17 piece metal and masonry drill set with 135 degree split point tip that eradicates the need to pre-drill and prevents the bit from drifting . The HSS bits have a silver finshed whilist the masonry bits have a silver and black finish manufactured from a high grade tool steel. The premium quality masonry bit can be used with cordless and corded drill drivers in both rotary and hammer action. Durable engineering quality drills provide a consistent rapid performance into all non-alloy materials. All well presented in a hardened case with a sliding lock closure.