Features: *Mini drill bits for jewelry, wood. *Precise, Accurate and Efficient. *Suitable For wood, plastic, rubber, model and others material to drilling hole. *Do not fit steel, iron, stone, such hard things. *Perfect For Drilling Wood, Jin Gang, Linden, Horn, Amber, Olive, Walnut, Plastic and other materials. Specification: Product name: Drill Bit Material: HSS Color: Silver Optional Size: 0.8mm, 1.0mm, 1.2mm, 1.4mm, 1.5mm, 1.6mm, 1.8mm, 2.0mm Shank Diameter: 2.35mm Length: (Approx. ) 50mm Suitable for: jewelry, wood, plastic, rubber, model and others material to drilling hole. Quantity: 1Pc Package Included: 1 x Drill Bit 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.