Ergonomic 45mm rotary cutter features a unique comfortable handle design for both left- and right-handed use. Features include the dual-action safety lock that allows the blade to be locked open for comfort and closed for safety. Accommodates the Olfa straight, wave and pinking blades. The cutter is a rolling razor blade used to cut fabrics into shapes, strips and pieces for sewing, quilting and craft projects. Handle is Guaranteed Forever.