Guide for drills and drill bits. A practical helper for drilling ceramic tiles, tiles or glass. Designed for guiding diamond drill bits (items 24770 - 24774), the strong suction cup holds the wire so that there is no danger of the bit bending or the bit from the desired position, if necessary it can also be used for drilling with cooling, guide hole diameters: 4, 5, 6, 6.5, 8, 10, 12, 13 mm.