Campbell Chain & Fittings T7630556 Stainless Steel Quick Link, 3/8", Tagged (Pack of 10). For fast and easy connections between two lengths of chain. Do not use to support human weight, for playground or athletic equipment, or as a safety device. Trade Size: 3/8", Finish: Polished, Material Diameter: 0.35", Length: 3.24", Opening: 0.39", Inside Length: 2.56", Inside Width: 0.78", Working Load Limit: 1540 lbs. Material Number: T7630556.