Description: Material: High Speed Steel 4241 Suitable for workpiece hardness less than 25 °? such as carbon steel, timber and PV boards Surface Treatment: White Drill Cone Chamfer Bit Shank Type: Round Specification: Size: Approx. 3-14mm/ 0.12-0.55 inch, Shank Diameter: Approx. 6mm/ 0.24 inch Size: Approx. 5-20mm/ 0.20-0.79 inch, Shank Diameter: Approx. 8mm/ 0.31 inch Size: Approx. 16-30.50mm/ 0.63-1.20 inch, Shank Diameter: Approx. 10mm/ 0.39 inch Package Includes: 3 Pieces of Umbrella Drill Bit
