Features: *20Pcs mini HSS drill bits set for precision crafts, jewellery, watch repair, model making, hobby work, Electronics etc. *Great for all sorts of jewelry & watch making. *Specially designed box keeps bits securely in place and dispenses on drill bit at a time. *Includes Sizes: #61(.0390")#62(.0380")#63(.0370")#64(.0.0360")#65(.0350") #66(.0330")#67(.0320")#68(.0.0310)#69(.0292")#70(.0280") #71(.0260")#72(.0250")#73(.0240")#74(.0225")#75(.0210") #76(.0200")#77(.0180")#78(.0160")#79(.0145")#80(.0135") Specification: Product name: Mini drill bits set Material: HSS Color: Blue + Silver Size: As shown (Imperial Drill Bit) Suitable for: Drilling Quantity: 20Pcs/set Package Included: 1 Set(20pcs) Drill Bits Note: 1.Transition: 1cm=10mm=0.39inch. 2. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 3. Please allow slight manual measurement deviation for the data. Made of high quality material, durable and practical to use. Perfect functions,give you a wonderful experience. We will ship it ASAP,when you place the order. If you have any questions, please feel free to contact us, we will solve it for you. Every customer can enjoy 30 days refund or replacement for Damaged/Quality Issues.