General description Designed for versatility and durability, the 6-60mm Step Drill Bit features a hard metal construction that is resistant to breakage. Its stepped structure allows for drilling in various sizes, making it an essential tool for metal sheet work. Technical specifications Drill size: 6, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60 mm Material: Metal Color: Silver Recommended drilling speed: 250-400 rpm Measurement allowed error: +/- 1-3 cm Installation Easy to install with no need to replace the drill bit while working. Compatible with standard drills and bench drills. Usage Choose from 12 working steps to meet various drilling needs. For optimal performance, use water injection cooling while working to extend the life of the drill bit. Other information Package Contents: 1 x Step drill holesaw Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual product.