[29 sizes]: 3 standard size step drills have the following 32 sizes: 15 steps: 4 to 32mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 30mm, 32mm); 9 steps: 4: 4mm (4mm, 4mm, 6mm, 4mm, 6mm, 8mm, 4mm, 8mm, 4mm, 6mm, 8mm, 4mm, 6mm, 8mm, 4mm, 4mm , 6mm, 8mm, 6mm, 8mm, 10mm, 10mm. 2mm, 14mm, 16mm, 18mm, 20mm; 5 steps: 4 to 12 mm (4 mm, 6 mm, 8 mm, 10 mm, 12 mm). A variety of drill bit sizes are perfect for your time saving needs.
[Premium Material]: These step drills are made from heat treated 4241 high speed steel with titanium nitride coating. Titanium coating to reduce friction and operate cooling, can effectively extend service life.
Scale structure: one drill bit can drill holes of different specifications, no need to buy multiple drill bits, saving space and silver.
Spiral Slot: Provides a faster, smoother cut and a tri-flat shank to ensure a firm grip. Triangular round shank: can be easily inserted into drill, drill and press-in drill.
Suitable for: Step drill set can be used for parts with hardness less than 25 ° and thickness less than 5 mm. Suitable for a variety of materials, such as carbon steel, sheet metal, insulation boards, PVC boards, wood, etc. They also help widen existing holes. Not recommended for stainless steel.
Total length:
4-32 mm: approx. 102 mm.
4-20 mm: approx. 76 mm.
4-12 mm: approx. 66 mm.
Color: Black.
Material: High speed steel HSS [4241].
Surface treatment: Titanium coating.
Shaft shape: Triangular round rod.
Rod diameter: 6 mm / 8 mm / 10 mm.
Quantity: 3 pieces
Note: this does not include other things, the color is based on the first picture, and other pictures only show the effect
Due to the differences between different monitors, the picture may not reflect the actual color of the item.
Due to manual measurement. Please allow deviation. Thank you!
No-delivery refund
