2 outside pockets for customisation. 30 mm, 4 D Ring mechanism. Spine width: 51 mm, 300 A4 sheet capacity (80 gsm). FSC® certified. Presentation binder with leather style, embossed eco-friendly PP foil, glued on both sides and welded at the edges for a smooth finish, without air bubbles and waves.. Features. Spine width. 5.1 cm. Rings quantity. 4. Ring diameter. 3 cm. Product colour. Black. Material. Plastic. Format. A4. Weight & dimensions. Dimensions (WxDxH). 51 x 265 x 318 mm