Authentic replacement cutter for Simple Woodturning Tools Simple Rougher (fits tools engraved with SR) Perfectly square corners and sides, no radius at all. 14MM x 14MM Size We machine our tools for this exact cutter. Other cutters may not fit the Simple Rougher. Authentic replacement carbide cutter for Simple Rougher (tool engraved with SR). 90 degree carbide square cutter. Corners are very sharp with no radius. Size: 14mm x 14mm. Best choice for turning perfect 90 degree shapes such as inside corners and tenons. Fits full size tools (engraved with SR). Will not fit mid size tools (engraved with MSR). Note: Tools sold prior to 10/24/2011 only accept this 90 degree square cutter.