Includes (5) Cutting Disc. New, Bulk Packed.. Patented EZ-Lock system for quick and easy accessory changes.. 2X more cuts compared to 426 fiberglass reinforced cut-off wheel.. Ideal for slicing, cutting, grooving, and trimming a variety of materials including hard metals like steel, metal pipes or sheet metal.. Reinforced with fiberglass for increased durability.. Compatible with the Following:Dremel: 4000, 400, 398, 395, 300, 285, 275, 200, 100, 8200, 800, 780,300,8220