"Precision machine with all the features needed to cut stacks of paper. Heavy æ"" wood base with machined alignment grid for precise cuts. Self-sharpening fully-hardened steel blades cut up to 30 sheets at once. Hold-down clamp provides a clean cut without shifting or tearing. Safety features include finger guard and patented automatic blade locking system. Torsion spring prevents blade from accidentally falling during operation. Manufacture's limited lifetime warranty (includes blade). Green."