ITEM NAME:Professional Step 4-32 mm Conical Cone Drill Bit Cutter Taper Mills new Characteristics: Step HSS high-grade steel drill bit hardened Titanium coated to reduce friction and heat and longer life Three sides of the leg design to avoid slipping when in feed Two flute design provides fast, smooth and clean cuts at every step is clearly marked with the steps Tiefenmesserin (Stainless steel, VA, stainless steel), non-ferrous metals, steel, plastics and Plexiglas. Specifications: Application: up to 5mm material thickness Surface treatment: TiALN-titanium coated with aluminum nitride Sizes: 4-32mm in 15 steps (4.6, 8.10, 12.14, 16.18, 20.22, 24.26, 28.30, 32mm) Length: 10cm Shank Length: 2.5cm Shank Dia: 1cm Note: Please allow 1-3mm error due to manual measurement..Step HSS high-grade steel drill bit hardened. Shank Length: 2.5cm. Three sides of the leg design to avoid slipping when in feed. Shank Dia: 1cm. 1x4-32mm step drill bits HSS TiALN. Also note that monitor settings may vary from computer to computer and may distort actual colors.