A Hook/Hook Turnbuckle consists of two (2) threaded AISI 316 grade stainless steel Threaded Hooks screwed into each end of a cast stainless steel frame, or Turnbuckle. Miami Stainless Threaded Hooks are forged AISI 316 marine grade stainless steel and designed to attach to a wide range of fixtures and fittings. Miami StainlessTurnbuckles Hook/Hook, are specifically suited for adjusting the tension and length of stainless steel wire rope, balustrade systems and other tensioning methods. Miami Stainless range of Turnbuckles include Econ and the ultra high quality ProRig brand.