Rotary cutting action prevents bending and tearing. Enclosed stainless steel blade cuts in both directions. Transparent cutting guide. Alignment grid and ruler with metric and standard scales. Sturdy 17 1/4 x 10 1/4 metal base with non-slip feet. Handy storage compartment under base. Manufacturer's limited one-year warranty (excludes blades). All sheet capacities are based on 20-lb. bond.