Sea-Dog Stainless Steel Bow Shackle These Sea Dog Bow Shackles feature a rounded shape and are designed to handle many different types of load from any direction. This shackle is ideal for many rigging applications. Constructed of Investment Cast 316 Stainless Steel Screw Pin Closure Dimensions 147056-1 A 14 B 12 C 1316 D 1-116 147058-1 A 516 B 58 C 1-18 D 1-716 147060-1 A 38 B 1316 C 1-38 D 1-1316 147062-1 A 12 B 1 C 1-1116 D 2-516 California Residents WARNING Cancer and Reproductive Harm - P65