NT Dia. 28mm Rotary perforating blades for rotary blade cutters (RO-2P, SK-2P, WA-2P). Special rotary cutter blade cuts perforated lines. These perforating blades are perfect for making raffle tickets or wherever perforation is needed. Smooth rolling blade makes neat dotted lines. These high quality perforation blades are made from stainless steel and produced through multiple stages of precise process to obtain the ultimate sharpness and optimum edge-retention. Two blades per pack. Good for making raffle tickets and perforated sheets. Made in Japan.