TAODAN 3PCS 1/4 Inch Hex Shank Quick Change Steel Taper Drill Bit Set Metric 4-12mm/4-20mm/4-32mm Step Drill Bits Suitable for Home DIY Drills

Material: steel Colour: gold Size: 4-12 mm (4 mm, 6 mm, 8 mm, 10 mm, 12 mm) 4-20 mm (4 mm, 6 mm, 8 mm, 10 mm, 12 mm, 14 mm, 16 mm, 18 mm, 20 mm) 4-32 mm (4 mm, 6 mm, 8 mm, 10 mm, 12 mm, 14 mm, 16 mm, 18 mm, 20 mm, 22 mm, 24 mm, 26 mm, 28 mm, 30 mm, 32 mm) Note: Not compatible with hammer drills. It is recommended to oil the drill before each use. Please drill a smaller hole for smoother drilling. Do not set the drilling speed too high to avoid damaging the cutting edge.

• Made from high quality steel with a titanium coating that ensures excellent durability and sharpness, providing longer cutting edge life.
• Includes 28 sizes, 5 sizes 4-12mm, 9 sizes 4-20mm and 15 sizes 4-32mm in three bits.
• Double edged design for smoother cutting. Split tip increases cutting speed through auto centring and prevents slippage in the drill chuck.
• Quick change 1/4 inch (6.35 mm) hexagonal shank for a wide range of home DIY drills.
• Suitable for punching and reaming holes in wood boards, plastic boards under 5mm, 1-2mm thick thin iron sheet, copper sheet.