- [Step Drill Bit] The step drill bit set with triangle round shank includes 4-32mm, replacing 15 individual drill bits.
- [Durability and sharpness] High speed steel with titanium coating improves durability and sharpness performence, reducing the friction and cooling the bit.
- [Stable and soomth] Small bits have hex shank to prevent slip during the rotation.Two-flute design provides faster, smoother cutting, provided with small pressure.
- [Suit for] The step drill bit is 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.We’ll respond within 24 hours on weekdays.(Please clamp the shaft in right place and necessary protective measures in woodworking processing.)