Drill through up to 20 sheets of 20 lb. bond paper with this three-hole punch. Oversized handle allows easy open-handed punching. Handle locks down for storage and safety. The three 9/32" diameter holes are preset to fit a standard three-ring binder. Nonskid, rubber feet to keep it in place while punching. Heavy-duty hole punch also features 4-1/4" center; adjustable, ruled paper guide; large capacity, paper chip pan; and heavy-gauge steel construction.