One-finger power! Lightweight three-hole punch is 50% easier to use than a standard hole punch. Vertical paper load guarantees correct alignment. Durable, long-lasting 9/32" punch heads. Sheet capacity is based on 20-lb. bond. (As more heads are added to a punch, the sheet punching capacity decreases.) Easy- to-open, sealed chip tray eliminates messes. Slip-resistant, non-marring rubber base. Manufacturer’s two-year warranty.