Dimensions: 12mm, 16mm, 19mm; Hex Shank Diameter: 6.35mm (1/4 inch); Chamfering Angle: 90 degrees. Designed for creating 90-degree holes in wood and soft metals for countersunk screws and fixings. Enables quick changes with a 1/4" quick chuck system; Durable tool life guaranteed with heat-treated carbon steel blades. Perfect for use on wooden planks, fiberboard, particle board, plywood, plastic, aluminum board, etc. Note: Avoid using these chamfers on high-hardness metal materials.
