[HSS CIRCULAR SAW BLADES]: The cut off saw blades are high speed steel and there are 4pc Diamond Cutting Disc X 20mm Diameter 2 Pc Diamond Cutting Disc X 22mm Diameter and Two 1/8"(3.1mm) Shank Mandrels [GREAT TOOL FOR DIY]: The cutting wheel set for rotary tool is suitable for cutting wood, plastic, gem, glass, aluminum alloy and jade. They are a great tool as well as perfect gift for DIY hobbyists. [COMPATIBLE WITH]: With low heat generation and thin cutting line, the cut off wheels are applicable to electric grinders, electric drills, hanging grinders, etc [USED FOR]: They can be used to cut metal, plastic, chassis modification, thin metal, bolts or screws, circuit board and DIY production after connected with mandrels, and are ideal for olive cutting. [WHAT YOU GET]: 6pc Diamond Cutting Disc Set For Rotary Tool, Weight: 0.0440924524 Pounds, Manufacturer: Dapetz