This High Quality Blade Cuts through Anything! ✅Design Purpose: designed for Dremel rotary tools, turn your rotary tool into a cut-off saw and grinding machine. ✅Sharp & Strong: The Cutting Wheels are sharp and strong, making them perfect for cutting gemstones, glass, ceramics, porcelain, tiles, carbide, rocks, aluminium, and copper. ✅Wide Application: This cutting wheel kit is suitable for DIY, cutting, sawing, carving, sharpening, and filing hard materials. SIMPLE AND EASY APPLICATION Features: Super Thin Carbon Steel. Suitable for cutting gemstones, glass, ceramic, rock, aluminium, and copper. Specifications: Cutting disc material: carbon steel Coating: dual-sided and edge Compatibility: fits Dremel rotary tools Product Size: Advanced Box Set Diameter 20mm * 3pcs | 22mm * 2pcs | 25mm * 2pcs | 30mm * 2pcs | 40mm * 1pc