ITEM NAME:20X High Carbon Steel Drill Driver Head Set Screwdriver Power Tools Descriptio n Description: 100% Brand New and High Quality 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 Size: 10mm, 25mm, 29mm, 33mm Package Included: 1 * Set of Drill Bits (other accessories are not included) Note: 1.Due to the manual measurement and different measurement methods, the actual size could be slightly different. 2.Please be reminded that due to lighting effects and monitor's brightness/contrast settings etc, the color tone of the website's photo and the actual item could be slightly different. We offer you what you need! 20X High Carbon Steel Drill Driver Head Set Screwdriver Power Tools.We'd like to settle any problem in a friendly manner. 1 Set of Drill Bits (other accessories are not included). Material:High Carbon Steel. Ideal for using to cut holes in a variety of materials including steel,brass, wood, plastic,copper, fibreglass and PVC etc.