SHINA 5PCS Top-quality Hard Tungsten Steel Alloy Coated Cutter Drill Bit 12mm 15mm 16mm 18mm 20mm Cemented Carbide Spherical Buddha Beads Woodworking Tools High quality and long lasting Used for cutting all types hard wood making ,woodworking Buddha beads . Brand New Cutter Edging Dia.: 12mm/15mm/16mm/18mm/20mm (5pcs in total)