3272bc, 1/2" x 9", galvanized hook & eye turnbuckle, for use in marine, industrial, & construction applications where maximum corrosion protection & strength are desired, meets federal specifications, ff-t-791b, type 1, form 1, class 6, end fittings are heat treated for added strength, bodies have hex heads for fast, easy adjustment, safe working load is 1040 lb, bulk.