ITEM NAME:5x titanium 10 step drill bit 1/4" to 1-3/8" inches tool for plastic wood me MO Feature: 100% Brand New and High Quality ! A3 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:A3 steel Color:Black Size: 10mm, 25mm, 29mm,33mm Package Includes: One Set (5PCS Drill bits) Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!.A3 Steel Large Step Cone Drill Titanium Bit Set Hole Cutter. Two flute design provides faster, smoother and cleaner cuts. With the Titanium coated to reduce friction and heat. brass, wood, plastic,copper, fibreglass and PVC etc.