Fellowes 5216901 Quasar 500 Electric Comb Binding System, 16 7/8 x 15 3/8 x 5 1/8, Metallic Gray Automatically punches up to 20 sheets of paper at a time in the touch of a button Binds up to 500 sheets with a 2 comb Enhanced accuracy edge guide centers documents with ease for pinpoint punching Built-in comb storage tray with integrated document measurement device for added convenience and quick set-up Loads vertically for accurate punch alignment