Heavy-duty rotary trimmer is designed for the most demanding trimming projects & made with a high percentage of recycled ABS plastic. Patented, locking rail mechanism & luminous paper holder are made of light harvesting acrylic. Use rotary trimmer to trim up to 36 sheets of standard copy paper. Trimmer also cuts cardstock, artist black-core matboard, 1/8" foam board & plastic sheets. Handy storage compartment holds extra blades & cutting mats. 12" trimmer also includes handy built-in paper guide, carrying handle, spare cutting mat, & straight & perforating blades.