【1-1/4" Diameter Capacity】Binds up to 280 sheets of 20 lb / 80gsm paper with a 2.5mm margin setting. For smoother page turning, use fewer sheets with deeper margins such as 3.5mm or 4.5mm.
【For 3:1 Pitch Machines】Designed for 3:1 pitch binding machines and punched paper with 3 holes per inch. Not compatible with 4:1 pitch ...