Rotary Paper Trimmer 10 Sheets Metal Base 11" X 12" - Spring-loaded aluminum rail holds work in place and prevents snag cuts making your work look clean and professional every time. - Patented removable X-ACTO?? hardened steel blade cartridge is perfect for cutting paper photos cardstock plastic and more. - Safety-cutting edge is only exposed when you engage the blade. - Enhanced standard and metric grid for accurate and easy-to-read measurements. - Sturdy metal construction for lifetime use. - Trimmer Board Type: Rotary Sheet Capacity: 10 Cut Length: 12" Blade Material: Hardened Steel.