Specifications: Diameter of the countersink top: 20.5mm,16.5mm,12.4mm,10.4mm,8.3mm,6.3mm; Diameter of the bottom:10mm,10mm,8mm,6mm,6mm,5mm; Overall length: 63mm,61mm,59mm,48mm,47mm,43mm; Material: high speed steel 4241 The HSS countersink drill bits with titanium coating come in 6 different sizes and are perfectly suitable for removing burrs of metal plates and chamfer of wood plates without leaving scratches. They also have a high circular machining accuracy and stability. Characteristics: Sharp and durable: The drill bits are sharp and durable, suitable for processing all types of steel, wood and plastic plate. Precision chamfer: The countersink drill bits can help to drill holes accurately. Remove burrs perfectly: The countersink drill bits can remove burrs without leaving scratches. Specifications Shape: 3 flute Edge: 90 degrees Material: high speed steel 4241 (for parts with a hardness below 25hrc, such as carbon steel, thin steel plate, insulation board, PVC board, wood, etc.) Sizes: Diameter of the countersink top: 20.5mm, 16.5mm, 12.4mm, 10.4mm, 8.3mm, 6.3mm Diameter of the bottom:10mm,10mm, 8mm, 6mm, 6mm, 5mm length overall: 63mm, 61mm, 59mm, 48mm, 47mm, 43mm Package includes: 6 x countersink drill bits
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