Short Description of the MP80 Punch Machine: This heavy duty 3-hole punch is strong enough to handle up to 80 sheets of 20lb bond paper. It is pre-set to punch 9/32" diameter holes which will fit into any standard 3-ring binder. Non-skid rubber feet keep it from sliding when in use. It features flip up guards on each punch head for safe operation and to assist in alignment and it has a lock down handle for easy storage when not in use. This sturdy, easy to use punch is a must have for any office.