3Pcs/Set HSS Straight Groove Step Drill Bits with Titanium Coated Hex Shank High Speed Steel Pagoda Wood Drill Bits Metal Hole Cutter Drilling ToolsFeature:1.3 Bearing Steel Tapered Step Drill Bits Drill Bits with Titanium Coating.2. Excellent workmanship, solid and durable.3. Wide range of application.4. It is a new steel bearing tapered drill made of high quality bearing steel bearing and coated with titanium to reduce friction and heat generation. Specification:Application:Suitable for cutting holes in various materials such as steel, brass, wood and plastic Shank: 6.35mm (1/4)Small Pagoda Drill Bit Specification:3-12: 10 steps (3mm 4mm 5mm 6mm 7mm 8mm 9mm 10mm 11mm 12mm)4-12: 5 steps (4mm 6mm 8mm 10mm 12mm)4-20: 9 steps (4mm 6mm 8mm 10mm 12mm 14mm 16mm 18mm 20mm)Large Wood Drill Bit Specifications:4-12mm: 5 steps (4mm 6mm 8mm 10mm 12mm)4-20mm: 9 steps (4mm 6mm 8mm 10mm 12mm 14mm 16mm 18mm20mm)4-32mm: 15 steps (4mm 6mm 8mm 10mm 12mm 14mm 16mm 18mm20mm22mm24mm26mm28mm30mm32mm)Material: bearing steelPackage size: 100*70*30mm/3.94*2.76*1, 18inNote:Due to the different monitor and light effect, the actual color of the item may be slightly different from the color showed on the pictures. Please allow 1-2cm measurement deviation due to manual measurement. 3 X Step Drills 1.