This 8-inch diamond flat lap disc features a 180 grit finish that delivers an ultra-smooth, highly polished surface. The 1/2-inch arbor makes it compatible with most grinding and polishing machines. Ideal for shaping, grinding, sanding and lapping a variety of materials including gemstones, glass, ceramics and more, it efficiently removes material while maintaining an even, flat surface. The diamond grit particles cut quickly and precisely for fast stock removal without risk of overheating or damaging delicate workpieces. Cleanup is simple, as swarf wipes away easily. Whether you need to flatten, contour or refine edges, this durable lap wheel handles the task efficiently and delivers a blemish-free, mirror-like finish every time.