Material: alloy steel (4Cr13MoV). Overall length: 180 / 205 / 290 MM. Edge Hardness: HRC55, quenching by the high frequency coil. Function Detail: this knob cutter, have a round concave edge, use to cutting the bonsai tree burl and root burl, would making a circular concave incision. In the healing process, tree’s sap would cover this incision and let it healing quickly and excellent smooth.
Tags: alloy, concave, cutter, edge, knob, made, professional, steel, tools
0