Specifications:
Product Name: Double Blade Step Drill.
Material: HSS
Coating: TiAIN Titanium Nitride Aluminum Coating
Hardness: HRC89
Number of Steps: 10
Step Length: Approximately 5 mm
Drilling Dimensions: 0.2 - 1.0 inches (6 - 25 mm) <10 steps> (6 / 8 / 10 / 12 / 14 / 16 / 18 / 20 / 22 / 25 mm)
Shaft Diameter: 1/4" hex shank (0.25 inches) (6.35 mm)
Hole Plate Thickness: Thin Iron Plate, Aluminum 0.08 inch (2 mm), Stainless Steel Plate: 0.04 inch (1 mm), Wood, Vinyl Resin, Plastic 0.2 inch (5 mm)