WildBossy Special brazed emery particles, long service life, fast cutting speed. It is sharp and wear-resistant for efficient and stable cutting. And it can withstand dry/wet cutting and long continuous cutting requirements. Diamond Cutting Disc is suitable for tool DIY, craft work, jewelry making, and product sanding. SPECIFICATIONS Material: diamond high manganese steel matrix Product weight :3.6oz Size: 4-1/2 in diameter; Sand width 0.59inch; Inner hole 7/8 in; The thickness is.063 in CHARACTERISTIC Achieve accurate, chip-free cuts with our diamond glass cutting disc. Its upgraded blade features a diamond high manganese steel substrate and new brazing process for longer service life, high temperature resistance, and low noise. WARNING When using these discs, wear all applicable safety equipment (eyes/ears/face/hands/body/etc.). Keep it moist during the cutting process. We were always there Every attempt can yield good results, and stand up for your every action when it is needed most. We'll guard it. Work efficiently, save time for each use, and maintain a productive lifestyle. We believe The correct scale is a sign of serious attitude at work every time.