Copper and Diamond: Practical stained glass grinder bit adopts copper base and diamond coating process, the thickness of coating is stable and uniform, excellent hardness and wear resistance, long time grinding of glass, ceramics and other hard substances are not easy to become blunt, long service life Fine Grinding Effect: Sturdy glass grinder bit has diamond coated fine grits, which can make the grinding surface even and fine, and when dealing with the edge of the glass, it can easily get rid of the rough edges and create a rounded arc, avoiding rough scratches after grinding, and giving the finished product a delicate texture Complete Set of Accessories: The set contains 2 pieces of 1.59 cm (5/8 inch) stained glass grinder bits, with 2 Allen wrenches and 2 replacement fuse tubes, complete accessories, no need to purchase additional, can be installed directly on the hand, compatible with most of the glass grinder on the market , out of the box to open the work Easy and Fast Installation: The installation of versatile diamond grinder bit only requires 2 steps, align the interface of the device and tighten it clockwise with a wrench Wide Range of Uses: Efficient stained glass grinding bit is specially designed for glass, ceramics, hard fragile substances, it can easily complete the polishing of stained glass edges, ceramic tile modeling repair, stone detail grinding and other actions, it's a handy tool for handmade enthusiasts to do stained glass, decoration engineers to deal with ceramic tiles, Manufacturer: GUIJZSLTRG