This grinding and polishing set is a must-have for any craftsman or hobbyist. Compatible with micro electric drills and rotary tools, these mounted stones are ideal for detailed grinding and polishing tasks. Use them to achieve a smooth, polished finish on jade and other materials, ensuring your projects look nice. Features -Color:Chocolate -Material:Corundum -Size:4.50X1.50X1.50cm/1.77X0.59X0.59in -Size:4.50X1.00X1.00cm/1.77X0.39X0.39in -Size:4.50X1.00X1.00cm/1.77X0.39X0.39in -Comprehensive abrasive kit: this set includes a wide range of tools for grinding, polishing, and sanding, making it a comprehensive solution for various tasks -Enhanced precision: the mounted stone grinding wheel heads offer enhanced precision, allowing you to control the grinding process with accuracy and ease -ideal for jade: specifically designed for jade and other gemstones, these grinding heads ensure a smooth and sturdy finish, enhancing the appearance of your materials -Userfriendly mini drill: the mini electric drill is designed for ease of use, offering portability and convenience for detailed and delicate work -Variety of accessories: featuring multiple grinding stone accessories, this set caters to different user requirements, ensuring you have the right tool for every job Package list: 45 x Sanding Bits