SD-1501A21 Comb Binder, 21-Hole, 15-Sheet Punch, 200-Sheet Capacity | Features 21 fully disengageable punch pins for customized hole patterns and flexible binding of different paper sizes

Effective Punching & Binding: Manually punches up to 15 sheets (80gsm, 20lb) and binds up to 200 sheets using 22mm (7/8 inch) comb binding rings, ideal for reports, proposals, and presentations. Accurate Margin Adjustment: Features a side margin adjustment for paper alignment and an edge guide with a 3mm to 6mm range, ensuring precise and professional outcomes. Detachable Punching Blades: Comes with 1-21 detachable punching blades for compatibility with A4, letter size, or smaller papers, providing versatility for various document sizes. Low-Effort Operation: The low-resistance handle eases punching and binding, making it suitable for both novices and experts. Sturdy & Practical: Constructed with robust metal for durable performance and includes 20 comb binding rings for immediate use