Coghlan's 8mm Bowl O'Biners (Bulk Pack, 72 Biners) Coghlan's 8 mm Biners are useful for attaching equipment, clothing, keys, tools, and more to packs, canoes, tents or belts Anodized aluminum make the biner light and the spring loaded closure is easy and secure Coghlan's 8 mm Biners are useful for attaching equipment, clothing, keys, tools, and more to packs, canoes, tents or belts