Although at first sight they may not look it, these are actually small moulding planes designed to cut a fixed radius curve on an edge. Supplied in pairs, each tool is ground with a different radius on each end - one cutting 1.6mm(1/16") and 3.2mm(1/8") radius and the other 4.8mm(3/16") and 6.3mm(1/4"). Easy to use, the plane will cut on either the push or pull stroke, remove material quickly and cleanly and will not cut more than their predetermined radius. Included in the kit is an extrusion with all 4 radii on it and a piece of 600g silicon carbide abrasive so the tools can be honed correctly and are always ready for use.