Introducing New Factor 55 Industrial Strength Rigging – Soft Shackle and Rope Retention Pulley The Industrial Soft Shackle and XXL Rope Retention Pulley bring the popular truck winching rigging gear to the industrial market, built for heavier loads and higher working load limits. Truck RRP and soft shackle combo on left, in comparison to RRP XXL and Soft Shackle combo, on right. RRP XXL - Extra-large friction pulley perfectly sized for industrial applications The RRP XXL, Factor 55’s largest pulley ring, has a working load limit (WLL) of 56,000 lbs. at a 3:1 safety factor, and 34,000 lbs. at a...