Sea-Dog Electro-Galvanized Spring Hook These Sea Dog spring hooks feature a spring-loaded closure for quick and easy connection. Hooks are constructed of electro-galvanized formed mild steel for both galvanic and barrier protection against corrosion. With a 1,200 lb. breaking strength, these hooks are suitable for a variety of applications. Electro-Galvanized formed mild steel 1,200 lbs. Breaking strength Dimensions A 4-116 B 1 C 12 California Residents WARNING Cancer and Reproductive Harm - P65