Trend Professional Ovolo Jointer & Scriber Cutters Sash Bar Ovolo Joint Cutter 17mm Radius Ref: 6/51X1/2TC Key Features: Scribing cutter to suit glazing bar ovolo Designed for sash bar window construction Ref. 6/510X1/2TC allows for a tenon on the sash bars Specification: D: 28.5 mm (metric diameter) C: 20 mm (metric cut length) R: 17 mm (metric radius) OL: 59 mm (overall length) Shank Diameter: 1/2 inch