[Rotary Tool Accessories] Package arrive include 20x mini rotary blade for dremmel rotary tool diamond saw blade cutting.[Precise production] Carbon steel cutting disc, wheel discs diameter of about 22mm, thickness of about 0.6mm, center hole diameter: 3mm.[Multi-Purpose Tool] Mini Diamond Cutting Wheel Ideal for cutting gemstones, glass, ceramics, porcelain, tiles, carbide, rocks, aluminum and copper.[Cutting Tool Advantage] Double Sided Diamond Cutting Discs are extra thin dremmel diamond cutting discs perfect for making slots and crevices and coated on both sides as well as on the edge.[High Compatibility] These diamond impregnated cut-off wheels are compatible with the majority of rotary and air tools, tile cutters, power grinders including dremel.1.Use a shallow dish of water to lubricate the diamond wheel, not only extend the service time, but also prevent dust from going everywhere.2.Please must wear protective glass and gloves for safety using.3.Please do not aim at people or objects when using the diamond saw cutting cut discs.4.The speed of the rotary tool does not exceed 30,000 rpm, low speed is perfect to use.specification:Material: carbon steelCoating: double side and edgeCut wheel diameter: 22mmCut wheel thickness: 0.6mmShalf diameter: 3mmCompatibility: rotary tool, dremel toolBox contents:20 x Diamond saw cut discs4 x rod chuck