Make your biggest projects a little less intimidating with Olfa's 45mm Ergonomic Rotary Cutter! Specially designed to reduce stress on hands, the ergonomic handle will ensure easy and comfortable cutting. Plus, the special endurance blade will allow you to cut two times as long! Imagine gliding through cotton, wool, vinyl, or leather, and when you're done, have peace of mind knowing that the self-retracting blade will make your sewing studio super safe. For both right and left handed users, we can't imagine cutting any other way again! For replacement blades, check out item # 427169, Olfa's 45mm Endurance Rotary Blades.