Ideal for everyday, high volume use, the CombBind C250Pro is a versatile, robust and durable comb binder. Easy to use and with a large capacity clippings tray, it can punch up to 20 80gsm sheets and bind up to 450 sheets using 51mm spines. Selector pins allow you to adjust for any paper size up to A4 and you can also alter the margin depth.Manual A4 comb binder, 20 sheet punch capacity, up to 450 sheet binding capacity with 51mm combs, adjustable margin depth, 21 selector pins