Olfa-the patented ratchet mechanism of the circle cutter makes cutting circles easy.Cut perfect circules from 1.875 to 8.5 inches in diameter.Features built in blade cover for safety and a plastic guard to cover the pivot spike when not in use.Great for fabric, paper, vinyl, film, leather or more.For right- and left-handed users.Includes rb18mm blade.Fits rb18 blades.Imported.