
?HIGH SPEED STEEL?The step drill bit(step drill) is made of 4241 high speed steel which has high hardness and good wear resistance. ?WIDE SIZE RANGE?This unique drill bit can be used to drill a wide range of holes from 5mm to 35mm, which can be widely used. ?HANDLE DIFFERENT MATERIALS?Our drill bit is most commonly used on softer materials such as thin iron sheets, aluminum, PVC and wood panels of 3mm or less. ?WIDE APPLICATION?The step drill bit(step drill) is ideal for jobs where thin steel, aluminum or plastic boxes and frames are encountered. ?CLEARLY MARKED?The hole size is clearly marked on the surface, you can check the data easily. Features: Material: Steel quick 4241 Step size: 5mm, 7mm, 10mm, 12mm, 15mm, 17mm, 20mm, 22mm, 25mm, 27mm, 30mm, 32mm, 35mm Straight shank: 13mm Quantity: 1pc Package includes: 1 x Cone Drill Bit(Step Drill)