Features:*20Pcs Drill bits kit set Great for precision crafts, jewellery, watch repair, model making, hobby work, Electronics etc.*Drawer transparent plastic boxes, elegant, easy to access.*Suitable for woodworking drilling, electronics repair, home repair, can drill wood, plastics, circuit boards.*Great for all sorts of jewelry & watch making as well as being ideal for repair work to.*Specially designed box keeps bits securely in place and dispenses on drill bit at a time.*Includes Sizes: 0.3mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm, 0.55mm, 0.6mm, 0.65mm, 0.7mm, 0.75mm, 0.8mm, 0.85mm, 0.9mm, 0.95mm, 1.0mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm. Specifications:Product name: Drill Bits SetMaterial: HSSColor: Black, SilverHand Drill Size: (Approx.) 112mm/4.4InchChuck Clamping Range: 0.3-1.1mm, 1.2-2.0mmDrill Bit Size: 0.3mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm, 0.55mm, 0.6mm, 0.65mm, 0.7mm, 0.75mm, 0.8mm, 0.85mm, 0.9mm, 0.95mm, 1.0mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mmSuitable for: Woodworking drilling, Electronics repair, Home repairQuantity: 22 Pcs/SetPackage Contents:1 x Hand Drill(1 Chuck Included)1 x Chuck20 x Drill BitsNote: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.