GL Ergogrip Binders. Standard width black covers (257x312mm) to take A4 size punched pockets. Durable polypropylene binders designed for frequent heavy-duty use. Available in a wide choice of great colours, these Swedish-made binders have many user friendly features and come with a 5 year guarantee. Two ring/four crossover prongs finished in matt black. Standard colours have brightly coloured spines with black covers. 55mm spine. Holds up to 400 sheets. Packed 2. Blue.