Concrete and Granite Drill Bit Set, 4-Piece, Ø 5–10 mm

In accordance with ISO 5468, diamond-ground special carbide cutting edge with a high tungsten carbide content and homogeneous fine grain structure, 120° point angle, asymmetrically shaped drill bit spiral for optimum drill dust transport, drill bit insert with high contact pressure and a recommended speed of 800 - 1. 000 rpm without impact, suitable for cordless and corded machines, colour green, specialist for the hardest stones such as granite, gneiss, slate, basalt, concrete, but can also be used for glass, ceramics or roof tiles and other hard materials.