This drill bit set includes 3,4,5,6,7,8,9,10,11,12,13mm diameter, which meet your different needs perfectly. We'll respond within 24 hours on weekdays. Specifications: Name:Step Drill Bit Balance: +/- . 4-22 mm Hex Titanium Coated HSS Step Drill Bit Drilling Power Tools Metal High Speed Steel Wood Hole Cutter Step Cone Drill Bit This compact set replaces 24 individual drill bits in 3pc Step Drill Bits which includes one 4-12mm, one 4-20mm, and one 3-12mm. Two-fluted design can provide faster, smoother cutting High-speed steel step drill, nice quality and durable. Suitable for punch holes through sheet metal, steel plate, aluminum plate, brass or wood. ★【Buy with Confidence】We offer TWO YEAR warranty on item(s) that confirm to be manufacturer defect. Features: Titanium coated to reduce friction and heat. ★【Durability and sharpness】High speed steel with titanium coating improves durability and sharpness performence, reducing the friction and cooling the bit. About this item ★[Step Drill Bit]The step drill bit set includes international sizes: 3,4,5,6,7,8,9,10,11,12,13 mm to replace 11 individual drills. ★[Durability and Sharpness] Fast steel with titanium coating improves durability and sharpness performence, reducing the friction and cooling of the bit. ★[Stable and Soothing]Small bits have a hex shank to prevent slip during... ★【Suit for】The step drill bit is suitable for punch holes through sheet metal, steel plate, aluminum plate, brass or wood. Hss Drill Bit Set 1 Pc HSS Steel Large Step Cone Titanium Coated Metal Drill Bit Cut Tool Set Hole Cutter 4 12/20 Waterford Crystal
