Description
The HSS countersink drill bits with in 6 different sizes are perfectly suitable for removing burrs of metal plate and chamfer of wood plate without leaving scratches. They also have a high circular machining accuracy and stability. 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 well 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: 47mm,47mm,46mm,39mm,40mm,37mm Package includes 6 x countersink drill bits