Step Drill Bit Set, Tapered Drill Bit, Hex Shank, 6-Piece Set with Storage Box

【Product Overview】
A bamboo shoot-shaped step drill bit set that accommodates multiple sizes. This single set can handle everything from drilling holes to enlarging them, chamfering, and deburring.
【High Durability & High Cutting Performance】
Made from ultra-hard HSS 4241 high-speed steel with a titanium coating on the surface. It boasts excellent wear resistance, maintaining sharpness even with prolonged use.
【Spiral Step Design】
The spiral shape prevents chips from clogging, allowing for smooth drilling. The stepped structure prevents drill slippage, enabling stable work.
【Easy-to-Use Hex Shank】
Features a 6.35mm hex shank compatible with electric drills and impact drivers. It allows for gradual hole enlargement from small to large diameters.
【Set Contents】
?4-12mm (5 steps)
?4-20mm (9 steps)
?4-32mm (15 steps)
*Total of 6 pieces / Includes storage case
【Compatible Materials & Applications】
Iron plates (thin), aluminum, wood, plastic, resin, bamboo, etc. Ideal for DIY, repair work, pilot hole drilling, hole enlargement, and chamfering.