Features:Made of high quality steelNew Steel Large Tapered Drill Bit Step Titanium Drill Bit Hole Cutting Set With titanium coated to reduce friction and heat Dual flute design for faster, smoother and cleaner cuts Suitable for cutting holes in a variety of materials including steel, brass, wood, plastic, etcSpecifications:Name: 6 Pcs Steel Drill Bit Parts Set Material: HSS4241 Finish: Titanium Color: GoldTotal Length: 60mm,62mm,73mm,75mm,94mm,100mm Shank: 3m,6mm,7mm,8mm,10mm Quantity: 1 set/6pcsNote: Please allow 1-3mm error due to manual measurement. Pls make sure you do not mind before you make a bid, due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Included:6 x Steel Drill Bits