The 18mm mini steel rotary blade is ideal for general purpose cutting small radius parts. Blades are easy to replace as they are held in place by a magnetic-mount, replaceable axle. Used in the apparel, furniture, sailmaking, inflatables, and canvas industries. Also available in a swivel rotary holder that mounts in the Plotter/Cutter pen holder. Discount packs of 100 18mm mini rotary blades available here.