Product description: Scope of delivery: 10 diamond cutting discs + 2 rods. Practical tools for DIY enthusiasts, craftsmen, jewelery makers, goldsmiths etc. These ultra fine diamond cutting discs are suitable for making slots and lamellae. Can be used on gemstones, metal, glass, ceramics, porcelain, tiles, carbide, rocks, etc. Mini diamond cutting disc. Diameter : 22mm. Thickness: 0.5 to 0.6 mm. Designed for rotary tools. Durable and solid. If sparks occur when using diamond coated tools, apply a lubricant. Features: Can be used with most rotary tools. Good hardness, wear resistance and good impact resistance. Can be used on gemstones, metal, glass, ceramics, porcelain, tiles, carbide, rocks, etc.< /p> Ideal for use in carpentry and crafts etc. Ready to use and easy to install on universal rotary tools.