Fellowes 1 1/2" Dia Comb binding color has a capacity of 340 sheets and is made of plastic for added durability. Binding features 10 spines as well as 19 rings and provides a professional appearance to bound reports or documents. 340 sheet capacity. Plastic comb binding. 1 1/2" diameter. Gives a professional appearance to bound documents. Use with Fellowes or any standard 19-ring comb-binding system. 10 black combs per pack. 1 1/2"(Dia) Fellowes Plastic Comb Binding creates easy-to-handle documents with a high-quality, custom look. This product is for use with Fellowes or any standard 19-ring comb-binding system.