Heavy-duty, high-quality replacement punch head with unmatched durability. Replacement punch heads are designed for select Swingline™ Heavy-Duty Punches. Delivers two-to-seven-hole punching of up to 40 sheets with a 9/32" punch-hole diameter. Accessory Type: Replacement Punch Head; Hole Diameter: 9/32"; For Use With: Swingline™ 74450, 74440.