1. 100% Brand New and High Quality. 2. Made from high quality HSS steel. 3. Ideal for using to cut holes in a variety of materials including steel, brass, wood, plastic, etc. 4. 3Pcs Hss Drill Bit Set, quality tool for jobs of all sizes. 5. Titanium coated to reduce friction and heat. 6. Heat treated and highly polished. Drills perfectly round holes in steel, brass, plastic, wood etc. 7. 3 sided shanks design in order to prevent slippage when in chuck. 8. Two flute design provides faster, smoother and cleaner cuts each step is clearly labeled with the depth diameter in steps. 9. Surface treatment: Titanium Plating. 10. Color: Golden. 11. Specification Step drill cutting specification: 4-12mm Hole Sizes in 2mm Steps (5 steps) 4-20mm Hole Sizes in 2mm Steps (9 steps) 4-32mm Hole Sizes in 2mm Steps (15 steps) 12. Package Included: 1x 3Pcs Hss Drill Bit Set.