Step Drill Bit, Stepped Drill Bit with Spiral Groove Pagoda Cone Design, 6-60mm Bearing Steel Reaming Hole Tool for Metal Plastic Aluminum Stainless Steel,

Item Type: Step Drill BitMaterial: Bearing steelDrill Specifications: Approx. 6mm / 0.24in10mm / 0.39in15mm / 0.59in20mm / 0.79in25mm / 0.98in30mm / 1.18in35mm / 1.38in40mm / 1.57in45mm / 1.77in50mm / 1.97in55mm / 2.17in60mm / 2.36inDrill Bit Length: Approx. 11cm / 4.3in(error ±2%)Package List：1 x Step Drill Bit

• Spiral Groove Debris Removal: This step drill bit features a dual wave spiral groove design that quickly clears metal shavings and debris during drilling, preventing clogging and ensuring smooth operation on stainless steel, aluminum, copper, and plastic sheets.
• Automatic Deburring Function: The split-point tip of this stepped drill bit automatically deburrs holes as you drill, delivering clean, smooth edges without needing extra finishing tools—ideal for precision tasks in home workshops or light industrial settings.
• Versatile Drilling Applications: Perfect for DIY enthusiasts and professionals alike, this cone bit drills accurate holes in a wide range of materials including fire extinguisher steel plates, sheet metal, plastic, and thin aluminum, making it essential for repairs and fabrication.
• High-Quality Bearing Steel Construction: Made from durable bearing steel, this pagoda drill offers high hardness, excellent rust resistance, and long-lasting wear performance, maintaining sharpness and structural integrity even after repeated use on tough metals.
• -Engraved Size Markings: Each drilling diameter from 6mm to 60mm is clearly engraved on the step drill bit, allowing instant size identification and precise hole selection without guesswork; includes one 11cm (4.3in) drill bit per package.