Dremel Fiberglass Reinforced Cut-Off-Wheel is designed for durability and precision, reinforced with fiberglass to withstand tough cutting tasks. This versatile wheel excels at cutting metal, including hardened steel, making it i for a variety of applications such as cutting, grooving, and trimming different types of metal. Beyond metal, it can also be used effectively on thin wood, plastics, and ceramics, providing flexibility for various projects. The wheel measures 1-1/4 inches in diameter with a thickness of .045 inches, and it comes in a package of five, ensuring you have enough for multiple uses. Model Number: 426