High quality folder made of 1.8mm thick card with a gram density of 900gsm - A4/50mm/5cm - D-shaped mechanism with 2 rings - Rounded corners, sturdy cardboard core - Ring binder - ideal for office and school - FSC certification rt that the raw material needed for the production of the product from responsibly managed forests ; it promotes sustainable forestry based on the world's highest standards of conservation and rugs the legality of the origin of the raw material - spine width: 50 mm - Ring diameter: 30 mm - Office folder DONAU LIFE Model: 3835001FSC-10; color - Blue - 2 years on the mechanism