Reinforced with fiberglass for increased durability the fiberglass reinforced cut-off wheels are ideal for slicing cutting grooving and trimming a variety of materials including hard and soft metals marble drywall and plastic. The cutting discs feature a 1-1/4 In. (31.8 mm) diameter and 0.045 (1.1 mm) thick blade and can be used to cut or slot bolts screws sheet metal thin wood and plastic. The 426 includes 5 cut-off wheels.