CMI designed their RP131 for use in a false crotch system to reduce wear on bull ropes. Its upper bushing maximises the strength of the sling, while its side plates prevent damage to the rope. The RP131’s upper bushing will allow slings up to 3/4” in diameter. The lower sheave will accept bull ropes up to 3/4″. The pulley’s knurled knobs allow for convenient rigging of the upper bushing. It has stainless steel side plates, aluminum sheave, bushing, and a zinc-plated steel axle. These materials ensure the pulley long life, even in harsh conditions. Made in the U.S.A.