Designed to meet the needs of both the professional tradesman and the home handyman. All are Tungsten Carbide Tipped, to ensure longevity of working life, coupled with a good quality finish to the work. Ovolo produces a stepped rounded profile along the edge of the material. The guide pin enables the cutter to follow intricate shapes. 1/4in Shank. Radius: 9.5mm Cut Diameter: 32mm Cut Depth: 16.5mm Shank: 1/4in