Hex concrete drill bit 4 mm

The Hex 4.0 mm 56T401 concrete drill bit by GRAPHITE is a hex shank HEX drill bit with a diameter of 4 mm, an overall length of 75 mm and a working length of 23 mm. Recommended for working with hard materials including: concrete, brick and stone. The GRAPHITE concrete drill bit will be suitable for do-it-yourselfers.