Replacement Head Punch SetSet of three replacement punch heads and five discs. Adjusts easily for three standard two- and three-hole punch positions. Punches up to 10 sheets of 20-lb. paper. Protective base prevents scuffs. Easy chip disposal. Makes it easier to adjust for two-hole punching. Durable and long lasting. Accessory Type: Replacement Punch Head Set; Hole Diameter: 9/32".