Larger Cutting Disc 32mm (1¼”) diameter, complete with 3.1mm (1/8”) stainless steel arbor (M3 thread). Kerf / width of cut 2 mm approx. Very controllable, cut a radius or straight. Tip:- Cut against the spin for greater accuracy & control. Fits Dremel, Proxxon, Flexi drives, hobby drills & Gerbil vacuum form trimmers. Virtually unbreakable steel cutting discs, tungsten carbide grit welded to the edge. Tough enough to cut piano wire, (aeromodellers use this for under carriage legs) fibreglass, Perspex, plastics, woods and ceramics. Rated 5,000 - 20,000 RPM