CESDes Rotary Blade, 60mm, 5 Piece Rotary blades ease the cutting of fabrics, craft paper, cardstock, leather Made of durable SKS7 metal most often used in hack saw blades Universal blades fit Olfa, Fiskars, ginger, dafa, and ergonomic cutting tools Convenient five pack in carrying case Save your hands, joints, wrists by using the CESDes rotary cutting blades in your cutter tool