Drill Bits & Accessories New 50pcs HSS Titanium Coated High Speed Steel Drill Bit Set Tool 1mm-3mm Business, Office & Industrial,Speed Steel Drill Bit Set Tool 1mm-3mm New 50pcs HSS Titanium Coated High, Material :High Speed Steel with Titanium coated, Containing Sizes:1mm,1,5mm,2mm,2,3mm, hope understand, Can not use for Stainless Steel Material,Hss Drill Bit Set For Wood, Plastic And Aluminum.Coated High Speed Steel Drill Bit Set Tool 1mm-3mm New 50pcs HSS Titanium.