6 PCS Step Drill Bit and Saw Drill Set HSS Drill Bits for Sheet Aluminum Iron Metal Stainless Steel Wood Hole Drilling Expanding Multifunction Spiral Grooved Step Drill for Woodworking Industry DIY

High speed steel drill set is multifunction and practical for home decoration and industrial use. The drills can be used for drilling or expanding wood, stainless steel, mold steel, steel board and different kinds of metal material. Perfect accessories for electric drill!Note: Size and color may be slightly different because of manual measurement and different light conditions. Thank you for understanding.Specifications:Package: Plastic Bag/ Plastic Box (Optional)Material: High Speed SteelSurface Treatment: Ti PlatingStep Drill: 4-12mm/ 4-20mm/ 4-32mmSaw Drill: 3mm/ 6mm/ 8mmPackage Size: 12 * 10 * 3cm / 4.72 * 3.94 * 1.18in (Plastic Bag); 17 * 11.6 * 3.3cm / 6.69 * 4.57 * 1.30in (Plastic Box)Package Weight: 270g / 9.52oz (Plastic Bag); 400g / 14.11oz (Plastic Box)Package List:3 * Step Drill3 * Saw Drill