Sngl Leg Chain Slng, 5/8 in dia, 22ft L, Oblong Link to Grab Hook, 22,600lb Lmt HSI slings are assembled in an ISO 9001:2015 certified facility where quality, safety and efficiency are priority. All slings are manufactured in a certified ISO 9001: 2015 facility.•GRADE 100 ALLOY – Most commonly used for overhead lifting applications due to its excellent energy absorption properties and strength to weight ratio..