Amana Tool 57192 Carbide Tipped Corner Rounding with Ultra-Glide Radius Bearing Guide Solid Surface 2-1/8 Dia x 1 Inch x 3/4 Radius x 1/2 Shank
A unique pilot bearing allows you to produce a true 180ﾡ bullnose with this corner rounding bit. Unlike a regular square-edge bearing it follows the radiused surface produced on the first pass. Will neither leave a flat spot nor gouge the edge. Use the (optional) regular 1/4" x 5/8" steel bearing for the first pass.