Tamerica TCC-SP41 Heavy-Duty Spiral Binding Machine with Fully Disengageable Pins, 20 sheets of 20lb paper max. punching capacity, 13.5" max. punching length, 45 mm max. binding capacity Key Features 20 sheets of 20lb paper max. punching capacity 13.5" max. punching length 45 mm max. binding capacity Oval Holes for easier coil insertion Open-end punch throat Fully disengageable pins 4-position punching depth adjustment Patented, concealed pop-up coil inserting table Heavy-duty, all-metal construction Hollow ground dies Specifications Dimensions: 21" x 15" x 10" Shipping Weight: 32 lbs.