Ronstan industrial block and tackle systems are manufactured using the highest quality pulleys and rope. The sires 50 All Purpose blocks maximize the load handling while reducing the friction under load. This is achieved using self-lubricating Acetal polymer sheaves running on polished stainless steel races. This configuration makes the pulley ideal for block and tackle use as the system can handle dynamic loads or static loads for extended periods of time. Both pulley arrangements feature Ronstan’s “Captive Lock” universal head which allows the swivel to be locked avoiding any twisting of the pulley heads when in use. One pulley assembly includes a multi position cam lock allowing for easy locking of the load in place.
Each pulley uses a stainless steel snap shackle for easy install and removal of the block and tackle in any situation. The RF6170 has a spring loaded pin making attachment easy with one hand.
The 10mm multi-braid line has a soft polyester outer cover improving grip and a polyester core makes it strong and pliable in the pulleys.