China Standard Square Straight Tungsten Carbide Replaceable Knives Cutter Inserts 20mm X 12 X 1.5mm for Woodworking Spiral Helical Planer Head and DIY Wood Lathe, Find details about China Carbide Insert Knives, Carbide Insert Cutter from Standard Square Straight Tungsten Carbide Replaceable Knives Cutter Inserts 20mm X 12 X 1.5mm for Woodworking Spiral Helical Planer Head and DIY Wood Lathe