The Fellowes Plastic Binding Coils Black Pack are an ideal choice to add a professional finish to your multi-page office documents and reports. These binding coils are versatile and flexible options to collating your A4 papers and files, thanks to the plastic construction. A great addition for office documentation and reports. Suitable for use with a 21 loop plastic comb binding machine. Available in various sizes and 3 colour variants - blue, white, and black.