They are made from cut lengths of cable-laid fabric and machine formed by laying six wire ropes in a helical pattern around a core rope. When looking for strength and durability on that next big rigging job, look no further than our array of HSI Wire Rope Slings. Each eye on these slings is formed using the mechanical Flemish Eye Splice. HSI slings are assembled in an ISO 9001:2015 certified facility where quality, safety and efficiency are priority.