Custom-ground drill tip custom ground Drill tip geometry allows the bit to drill through multiple materials for versatility and convenience Twister impact rated ¼” quick-change shank means drill bits can be rapidly interchanged within power tools (including impact drivers) for convenient and hassle free drilling High quality alloy steel provides durability and strength For the drill bit to withstand the torsional impact of an impact driver Made in sheffield designed and manufactured at our factory in Sheffield Designed for use in: sheet Metal, Soft Tile, timber, soft brick & lightweight block. Twister masonry drills are ideal for: drilling fixings holes for wall plugs etc., one handed drilling in tight spaces with an impact driver & drilling multiple materials with one drill bit and one power Tool, Manufacturer: Armeg