Description of Titanium 3 Piece High Speed Multiple Drilling
【31 Step Sizes】13 step drill (1/8, 5/32, 3/16, 7/32, 1/4, 9/32, 5/16, 11/32, 3/8, 13/32, 7/16, 15/32, 1/2-inch) 6 step drill (3/16, 1/4, 5/16, 3/8, 7/16, 1/2-inch) and 12 step drill (3/16, 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8-inch). 【Wide Application】Prefect for sheets of Metal ,Wood ,Plastic ,Aluminum ,Copper × NOT FOR Steel and Hard Metal. Suitable for Home DIY, General Building and Engineering Use. 【HSS with Titanium Coating】Industry grade fully ground high speed steel with titanium coating reduces friction and drills with less heat,which ensures strong wear-resistance and durability. 【DURABLE STEPPED UP BITS】High Speed Steel along with the titanium coating ensures extreme durability, will stay new and shiny for years to come. 【90 Days Warranty】If you are not fully satisfied with our product for any reason, please contact us for 100% refund or replacement.