These GBC Plastic Binding Combs are strong and durable and add a great finishing touch to a range of documents including presentations, reports and projects for school or home office use. The 8 mm GBC Plastic Binding Combs have 21 loops that securely hold up to 45 sheets of A4 paper. These binding combs are made from strong, durable plastic designed to last the lifetime of your documents Each comb holds up to 45 sheets of 80 gsm paper enabling you to bind smaller documents The standard 21 plastic loops are great for binding A4 size reports or similar documents Versatile to use on all plastic binding machines The tight closing ring holes hold documents firmly in place This pack contains 25 black 8 mm combs.