Btstil HSS step drill bit made of high speed steel, durable and long last12 sizes: 6-60 mm (6, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60 mm). Commonly used to drill holes in a variety of materials such as steel, wood, thin iron, aluminium alloy, insulation boards, PVC panels and more.
Package Content:
1 x HSS step drill 6-60 mm.
Use tips:
1. When using an electric drill, please always wear safety glasses, mask and gloves.
2. Do not touch it with your hands as the drill heats up during use and there is a risk of burns.
3. It is recommended to oil the drill before each use. Please do not adjust the drilling speed too high to avoid damage to the cutting edge.
4. Please note that when using the metal plate of the product drill, the product must be filled with water for cooling. Due to the high temperature, the step drill can be easily softened. Drilling under water cooling can effectively extend the life of the drill.