NT Heavy-duty, extra large circle cutter with rotary blade makes a great fabric cutting tool. Rotary blade cuts without twisting fabric. Unique fabric circle cutter with sturdy aluminum holder and rotating grip for extra stability leaves no center pin mark. Ideal for crafts and projects that involves cutting felt, denim, lace, soft film, etc. Circle can range from 7-7/8" ~ 39-3/8" diameter. Hold the center grip firmly down and slowly turn rotating grip in the direction of the cutting edge. Do not try to cut with just one turn. By turning the cutter several times over the surface, you will have better results. This large circle cutter includes (2) extra durable rotary blade, BR-28 and (1) rotary blade to cut waves, BW-28. Special rotary blades are made of premium quality chromium and tungsten added to carbon tool steel and produced through multiple stages of precise process to obtain the ultimate sharpness and optimum edge-retention. Good for quilt making, detail or curved cutting on fabric, etc. Made in Japan.