ITEM NAME:6PCS Titanium Coated 90Degree Chamfer Countersink Drill Bit Grinding ChamfeS Ew 6PCS Titanium Coated 90 Degree Chamfer Countersink Drill Bit Three Flute Full Grinding Chamfering 6.3-20.5mm Chamfer Drill Bit Specification: Type: Countersink Drill Bit Material: High Speed Steel Coated: TiN Coated Chamfer Degrees: 90 Flute: 3 Application: It is suitable for use in the work-piece which the hardness is under 25 degrees, such as aluminum sheet, thin iron plate, the insulatuing board or PVC board. Note Please allow 1-3mm error due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Including: 6pcs Chamfer Drill Bit Set.6PCS Titanium Coated 90 Degree Chamfer Countersink Drill Bit Three Flute Full Grinding Chamfering 6.3-20.5mm Chamfer Drill Bit. Type: Countersink Drill Bit. 6pcs Chamfer Drill Bit Set. Chamfer Degrees: 90.