aterial: HSS Steel Surface Treatment: Titanium Coated Type: Step Drill Head Type: Hexagon Shank Quantity: 3PCS Color: Gold
Sizes:
15-step bit: 4-32mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm, 32mm)
9-step bit: 4-20mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm)
5-step bit: 4-12mm (4mm, 6mm, 8mm, 10mm, 12mm)
Length:
4-12mm Length: approx. 6.7cm/ 2.64″
4-20mm Length: approx. 7.4cm/2.91″
4-32mm Length: approx. 10.2cm/4.02″
Warm tips:
Gun drill, bench drill. Cooling down with water during work can effectively extend the drill’s lifespan.
Recommended drilling speed: 250-400 RPM. Suitable for cutting through wood, metal, and other surfaces with thicknesses under 5mm.
Usage:
Suitable for use with gun drilling and bench drilling.