Cap cutter including: 4 standard cutters and 4 round handle cutters with tapered shank; Shank diameter: 9.3mm Can make 4 sizes of wood nails: 6mm, 10mm, 13mm, 16mm (1/4", 3/8", 1/2", 5/8").< /p> Material: carbon steel. The drilling speed should not be too fast, otherwise the high temperature will damage the drill bit. Application: Can be used with desktop rig, hand rig or other professional office mold rigs. In order to avoid slipping or eccentricity when drilling, it is better to use a fixed drill or a fixed drill bit. Apply to making nails or removing broken nails from boards. p> Note: The data is manual measurement, please allow an error of 1-60cm, due to the difference between the light and the screen, there will be a certain color difference, the specific received in kind shall prevail.