6-35mm 13 Step 1/4 Inch shank Step Drill Bit Drill For Metal Cone HSS Step Drill

Features: *The ladder of its unique structure a bit can open a variety of specifications of aperture. *Do not need to use center punch compared with the ordinary spiral drill is not easy to be broken. *Deburring chamfering elliptic hole enlargement spiral drill the function of them was unable but it is possible. *The use of tools: drill bench drill.Work while water cooling can effectively extend the service life of drill bit recommend drilling rate of 250-250 RPM. Specifications: Product name: Step Drill Bit Material: HSS(High Speed Steel) Color: Gold Shank: Hex Shank Shank Dia: 6mm Shank Length: 30mm Overall Length: 110mm Size: 6-35mm(6-8-10-12-16-18-20-22-25-28-30-32-35mm) 13 Step Suitable for: Carbon steel plate thin iron plate insulating board PVC board wood board and the thickness of the board is less than 5mm Drilling Quantity: 1Pc Package Contents: 1 × Step Drill Bit Note: 1.Transition: 1cm=10mm=0.39inch. 2. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 3. Please allow slight manual measurement deviation for the data.