China 40mm Standard Square Straight Tungsten Carbide Replacement Cutter Knives Inserts 40mm 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 40mm Standard Square Straight Tungsten Carbide Replacement Cutter Knives Inserts 40mm X 12 X 1.5mm for Woodworking Spiral Helical Planer Head and DIY Wood Lathe