This heavy duty table top rotary trimmer can handle just about anything you desire to cut: Photos, cardstock, chipboard, paper, foam, acetate and much more! Cuts up to ten 20 lb. sheets of paper at one time! The mat has detailed ruler markings for inch, centimeter, and millimeter, and is replaceable so you don't have to get a whole new trimmer when it wears out. The straight blade changes quickly and easily. The sturdy metal base is calibrated with preset measurements for A4, Letter, 10" x 8" photo, 7" x 5" photo, 6" x 4" photo and many more popular sizes of papers.Details:Gray, blue15" x 10.75" x 2.75" trimmer size with 12" x 9" matIncludes 1 straight blade