X-ACTO Square Commercial Grade Wood Base Guillotine Trimmer, 15 Sheets, 15 inch x 15 inchX-ACTO hardened steel blade slices through paper quickly and easily. Perpetual Edge Self-Sharpening System keeps blade sharp. Composite wood base and blade-lock safety latch. Safety guard keeps blade away from fingers. English and metric grids. Trimmer Board Type: Guillotine; Sheet Capacity: 15; Cut Length: 15"; Blade Material: Hardened Steel.