Features: *Made of diamond powder and silicon carbide, suitable for sanding, polishing, trimming. *Available in five colors: yellow, green, brown, blue, pink. *Purpose: mainly used for DIY grinding, polishing/jade, wood, metal, mold polishing, electric tool matching. Specification: Product Name: Diamond Grinding Head Material: diamond powder and silicon carbide Optional Color: Yellow, Green, Brown, Blue, Pink Total Length: (Approx. ) 53mm / 2' Head diameter: 8mm Shank: 2.35mm Suitable for: mainly used for DIY grinding, polishing/jade, wood, metal, mold polishing, electric tool matching. Quantity: 10pcs Package Included: 10 × Grinding Head 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.