70pcs 1.0-3.0mm Shank Straight Drill Bits High Speed Steel HSS Twist Drill Bits Connection Set Power Hand ToolsFeature:Straight shank twist drill bit is mainly composed of shank and working part. The guide part of the working part plays the role of guiding and grinding preparation, and the chip groove is spiral in shape to facilitate the routing of chips. High-speed steel, suitable for drilling holes for iron, wood, plastic, aluminum alloy and other materials. Specification: Material: High Speed Steel Surface Treatment: White Diamond (Base Color)/Gold (Titanium Plating)70pcs Specifications: 1mm*20pcs, 1.5mm*20pcs, 2mm*10pcs, 2.5mm*10pcs, 3mm*10pcsPackage Size: About 100*50mmNote: Due to the different monitor and light effect, the actual color of the item may be slightly different from the color showed on the pictures. Please allow 1-2mm measuring deviation due to manual measurement.70 X Twist Drill Bits