The radius center at shank diameter on our Extended Reach, Double End, Solid Carbide, Corner Rounders allows for machining close to other features. AB Tools' Extra-Long Corner Rounders are manufactured with solid carbide, double end, and extra long. These are also profile ground like our other corner rounding tools. The radius centerline on these tools is on the shank diameter so they can be used to cut radii right along a wall or other part features. Special orders in 4-6 working days. Proudly made in the USA by AB Tools, Inc.