ACME-Multi Purpose 9 inch Trimmer is ideal for home school or office use. Sharp blades allow for precision cutting of 20-lb paper cardstock construction paper digital photographs and more! Features: Titanium Bonded Blades are 3 times harder than stainless steel...so blades stay sharper longer; Swing out 12 inch ruler is flush with base for accurate measuring and cutting of larger pieces. Includes: 1 cutting blade (yellow) and 1 scoring blade (blue). Measurements scaled in inches and metric BR - easy to use 1/2" grid. SIZE: .50"HX4.75"WX12.25"D. Westcott 15-year warranty. Caution: Blade carriage is extremely sharp.