Description Sizes 5: 16/18/20/23/24mm High Quality: Made of carbide, the hole is sharper, more durable and not easy to rust Sharp Blade: Made of alloy and with thick edge, it can solve the problem of old knife breaking and it greatly improves the toughness of the blade Unique Design: The trident head design and scientific principles cut carpentry, it features high drilling efficiency, and smooth chip removal Universal use: This item is compatible with hand drills, cordless drills and bench drills etc Product Description Carbide Tipped Shaping Bits Suitable for abrasive materials such as hardwood, solid wood panels, chipboard, fibreboard, melamine boards Ideal for cabinetmakers and carpenters (windows, doors, kitchens) Carbide Tipped Shaping Bits Sizes: 16/18/20/23/24mm Durable carbide material. Titanium Single Coated bits for use on wood Guided by County Rim, Bores Every arc, in every direction. Pocket to punch overlapping or edge holes. Drilled a true, clean and accurate flat-bottomed hole. For use with Pillar drill (Drill Press). Rapid disposal of waste. Radical Cut. Long steel for tungsten life. A popular choice of different sized bits are available.