Product introduction: 100% Brand New and High Quality Made from high quality HSS steel. With nylon storage bag. New HSS Steel Large Step Cone Drill Titanium Bit Set Hole Cutter. Heat treated and highly polished. With the Titanium coated to reduce friction and heat. Perfect for home DIY and general building / engineering use. Ideal for using to cut holes in a variety of materials including steel, brass, wood, plastic,copper, fibreglass and PVC etc. 3 sided shanks design in order to prevent slippage when in chuck. Two flute design provides faster, smoother and cleaner cuts. Each step is clearly labeled with the depth diameter in steps Specifications: Material:High carbon steel Finish: Titanium Diameter: 6.3mm Package Includes: 5Pcs/Set Titanium 10 Step Drill Bit Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!