Multi-purpose loose leaf rings are made of tough steel that are nickel plated and then painted in an assortment of metallic colors. Rings open and close easily and have a precision snap catch for secure locking. These rustproof rings are strong and durable. Ideal for use with swatches, keys, documents, bulky loose leaf material, memos, keeping flash cards together, pocket charts and more! Sheet Capacity is approximately 125. Each pack includes 50 rings. Sold as 3 packs for a total of 150 book rings.