ITEM NAME:6pcs HSS Metric Drill Bit Set Titanium Coated Twist Drills Metal Wood 6 QJN GKJ.Material: HSS. HSS, also known as high speed steel, is a commonly used material for tooling tools. The straight shank twist drill is mainly composed of a handle and a working part. It is suitable for drilling holes in angle iron, wood, plastic, aluminum alloy and other materials.
