The Strend Pro screw chamfering tool is a great helper in any workshop and construction site. It is made of high-quality metal, which guarantees its long service life. You can use it to chamfer the edges of screws, threaded rods, and shafts from 6-20 mm. Terminal: 1/4" hex for attachment in a drill and screwdriver. Cutter dimensions: 25.5x50.4 mm.