Compasses for drill is used for drilling accurate round holes in tile, tile, glass, porcelain, and other similar materials. With it, drilled holes for sockets, switches, plumbing pipes and other. The drill is a metal rod with a tip in the form of an arrow - and guide the cutting element - for drilling circular holes. Made of high quality tool steel. Thanks to Precision ground tip drills, you get a perfectly smooth round holes without chipping on the product. Properties Creates through holes with the possible diameter of 20 to 100 mm; The hole diameter is set slider; The compass is installed in a regular patron.