Replacement punch kit contains two replacement punch heads and two replacement punch discs. Replace punch heads and discs every 12 months to ensure the best hole-punch performance. Punch heads are compatible with the Swingline™ High Capacity 2-Hole Punch only. Punches two 9/32" diameter holes through up to 100 sheets. Accessory Type: Replacement Punch Head; Hole Diameter: 9/32"; For Use With: Swingline™ 74190.