GBC CombBind A4 Plastic Binding Combs, 21 Ring - Black - 12mm, Pack of 100

GBC CombBind A4 plastic binding combs in black, 12 mm diameter with 21 rings. Pack of 100 (GBC article 4028177). CombBind spines give you bound documents that can still be edited: pages lie flat for note-taking and photocopying, and pages can be added or removed. The combs are made from durable plastic and can be reused. They work with GBC CombBind and other 21-ring A4 comb binding machines.