Features: Made of high quality resin + diamond,firm and durable,the plastic outer ring is filled with flexible foam. During operation, the resistance can be utilized to push the stone onto the wheel. Soft diamond wheels achieve outstanding performance and offer high-quality surface finish. Diamond resin flexible wheels perform polishing, grinding, forming, edging and grinding operations perfectly. It is suitable for most stones, gemstones, ceramics, glasses, crystals and jades. good performance,suitable for home and professional use. Portable and small size,easy to store and carry. Widely used to: polishing and grinding of gemstones, jade, crystal, glass, artificial crystal, lapidary jewelry etc.