The product is made of high hardness of the electroplated diamond material, the durability is very high. It is processing all kinds of jade polishing, mold repair, glass , cleaning casting, forging, welding parts of , Burr, weld, such as the correction tool. A variety of product models, can people's needs. Features - Color: Silver - Material: alloy - Size: 6x1x1cm - They are made of brazed diamond, the grinding capacity is stronger and more than the ordinary electroplating grinding head. - 1 sets of 20 different shape grinding heads, to meet the different needs of more people, more practical. - Mainly used in stone (marble, quartz, granite, etc.) and jade . - Used for sculpturing, dressing, precision grinding and internal grinding carbide in ceramic, glass, , alloy and many the abrasive materials. Warm Tip: Dear buyer, Due to lighting effect, monitor's brightness, manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you! Package list: 20 Grinding Heads