Features: *-new and high quality. *Made of high-quality materials, . *Good chip removal performance, avoid sticking to the cutter edge, can cut quickly, accurately and smoothly, without burrs, and produce smooth decorative edges. *Round shank is easy to use, has good compatibility, enhances the anti-vibration and cutting speed of the cutter, and makes the clamping firmer without slipping. Specifications: *Product name: Rotary Tool Bit *Color: Silver *Material:Tungsten steel *Head Diameter:12mm *Shank Diameter: 3 mm *(optional):1.5/2/3mm *Quantity: 1PC Package Included: 1*Rotary Tool 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.