Beveled Drill Bevel Cutter Deburring DIY Bits Pre Hole Cone Hexagonal Shaft Titanium Coated Drill Bit Set Tool Metal Chamfer Cutter Set of 6 Suitable for Wood and Soft Metals Sold as a set of 6. 6, 8, 9, 12, 16, 19 mm Titanium Coated Surface Treatment; Uses: For removing deburring from thick wood, aluminum plate, resin, plywood, plastic, etc. Material: High speed steel tool HCC