Feature

●Set Contents: 3 step drill set (1 storage bag included)
●[Product Specifications] Size: 0.2 - 0.5 inch (4 - 12 mm), 0.08 inch (2 mm) increments (4 - 6 / 8 / 10 / 12 mm), 0.1 inch (4 - 6 / 8 / 10 / 12 / 16 / 18 / 20 mm) 9 steps 4 - 32 inch (32 / 14 16/18 /20/22/24/26/28/30/32 mm) 15 steps
●Product Features: The step drill body is made of high hardness high-speed steel (HSS steel 4241), and the surface is coated with titanium to strengthen the resistance of oxidation and corrosion resistance. It is harder than ordinary steel step drills and has excellent sharpness
●Wide range of uses: The step drill is expanded in order from small holes to large holes, so you can adjust the opening of multiple sizes and magnification of holes. The axis is shaped with a hexagonal axis, so it can be used with impact drivers. Used to drill holes in low-hardness boards, such as wood, aluminum, plastic, PVC sheets, thin iron, etc. An essential tool for household DIY, enlarging the lower hole, chamfering, deburring, etc
●[Heat Dissipation Protection] When you drill a large diameter hole with a step drill, if the material is hard, please add water and cool with water to effectively extend the life of the drill


Description

When drilling a large diameter hole with a step drill, if the material is high hardness, add water. When drilling, cooling it with water can effectively extend the life of the drill.