Your Supermart 20pcs Mini HSS Twist Drill Bits Set/1pc Hand Drill Chuck Aluminum 100% Brand new and high quality. The set includes 20pc HSS twist diamond coated drill bits and one metal swivel head pin vise. Hss drill bit set for wood, plastic and aluminum. Specially designed box keeps bits securely in place and dispenses on drill bit at a time. Includes Sizes: 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, 1.0, 1.2, 1.3, 1.4, 1.5, 1.6mm. 20Pcs Micro HSS Mini Twist Drills Twist Drill Great for precision crafts, jewellery, watch repair, model making, hobby work, Electronics etc. Great for all sorts of jewelry watch making as well as being ideal for repair work.