This 12mm single prong thonging chisel, from Japan, is made from quality materials by Oka. Each Oka thonging chisel is honed individually by professional craftsmen so that it will cut leather precisely with every hit of a mallet. The smooth, tapered finish of the cutting edge allows it to cut clean slits and be pulled out easily even on thick leather. This tool's handle is knurled to prevent it from slipping from your fingers during use.Use this thonging chisel to punch slits suitable for lacing leather. This tool can also be used to cut excess trimmings from your leatherwork.Available sizes (each sold separately):• 2mm• 3mm• 6mm• 8mm• 12mm• 20mm• 25mmPlease note: This tool is sharp, keep out of reach of children. Store without the tool making contact with any hard surfaces to avoid dulling the cutting edge.