•GREATER WEAR RESISTANCE – A 6 x 25 IWRC (Independent Wire Rope Core) classification for wire rope slings offer large outer wires that provide a balance between fatigue and wear resistance.HSI slings are assembled in an ISO 9001:2015 certified facility where quality, safety and efficiency are priority. This process allows for the most efficient use of the rope capacity with top-quality steel as the pull is directly along the centerline of the rope and eye.