Smooth rolling trimmer for all kinds of free-form cuts. Rotating head offers 5 locking preset positions to provide optimum pressure on the materials you"re trimming. Sleek, ergonomically-designed handle can be used with either right or left hand. Thumb-activated retractable safety cover helps prevent injury during trimming. Quick-change blade axle with automatic blade tensioner makes it easy to change or replace cutting blades. While this trimmer includes a straight blade, there are 10 other blade designs that are sold separately. Great for using with a straight edge to make long, straight cuts in wide format prints, fabric bolts and more. Also trims cotton, burlap, canvas, felt, plastic sheets, photographs, paper, card stock, acetate and much, much more.