3pcs Spiral Step Drill Bit [4-12/4-20/4-32 mm,Total 32 Sizes], Hex Shank Taper Titanium Coated High Speed ​​Steel, Multi-Function Industrial DIY Metal Work

3pcs Spiral Step Drill Bit [4-12/4-20/4-32 mm,Total 32 Sizes], Hex Shank Taper Titanium Coated High Speed ​​Steel, Multi-Function Industrial DIY Metal Work
3pcs Spiral Step Drill Bit [4-12/4-20/4-32 mm,Total 32 Sizes], Hex Shank Taper Titanium Coated High Speed ​​Steel, Multi-Function Industrial DIY Metal Work
3pcs Spiral Step Drill Bit [4-12/4-20/4-32 mm,Total 32 Sizes], Hex Shank Taper Titanium Coated High Speed ​​Steel, Multi-Function Industrial DIY Metal Work
3pcs Spiral Step Drill Bit [4-12/4-20/4-32 mm,Total 32 Sizes], Hex Shank Taper Titanium Coated High Speed ​​Steel, Multi-Function Industrial DIY Metal Work
3pcs Spiral Step Drill Bit [4-12/4-20/4-32 mm,Total 32 Sizes], Hex Shank Taper Titanium Coated High Speed ​​Steel, Multi-Function Industrial DIY Metal Work
3pcs Spiral Step Drill Bit [4-12/4-20/4-32 mm,Total 32 Sizes], Hex Shank Taper Titanium Coated High Speed ​​Steel, Multi-Function Industrial DIY Metal Work

[29 sizes]: 3 standard size step drills have the following 32 sizes: 15 steps: 4-32mm (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: 4-12mm (4mm, 6mm, 8mm, 10mm, 12mm) A variety of drill bit sizes are perfect for your needs and save you time.
[Premium Material]: These step drill bits are made of heat treated 4241 high speed steel with titanium nitride coating. Titanium coating to reduce friction and operate cooling, can effectively prolong service life.
Ladder structure: one drill bit can drill holes of different specifications, no need to buy multiple drill bits, saving space and silver.
Spiral Slot: Provides faster, smoother cutting and a tri-flat shank to ensure a firm grip. Triangular round shank: can be easily inserted into drill, drill press and press drill.
Suitable for: the step drill bit set can be used for workpieces with a hardness of less than 25° and a thickness of 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.
Number of pieces delivered: 3
Color: Black