3pcs Drill Bit Set Practical Black Nitride Coated Metal Drilling Bits Kit

Features: Made of superior high speed steel, firm and long-lasting. Nitride coated, has nice heat resistance, corrosion resistance and rust resistance. Special step stucture, can drill different size of holes. Apply to thin iron plate, steel board, wood, aluminum, insulation panels, PVC sheet, ect. Specifications: Material: high speed steel Coated: nitride coated Color: black Quantity: 3pcs (3-12mm/4-12mm/4-20mm) Bits detail: 3-12mm: 3-4-5-6-7-8-9-10-11-12mm 4-12mm: 4-6-8-10-12mm 4-20mm: 4-6-8-10-12-14-16-19-20mm Package size: 100 * 50 * 20mm / 3.94 * 1.97 * 0.79in Package weight: 90g / 3.17ounces Note: Due to the different display screen and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Package List: 3 * Drilling Bits