Pulley with swivel  Constructed with aluminum side plates and spacers then bolted together with stainless steel hardware.  The sheave has a stationary bearing race with delrin ball bearings for a smooth operation.  The sheave is recessed to prevent the line from being captured between the side plate and sheave.  The 12/0 swivel is rated by the manufacturer at 1500 lbs. (this swivel is constructed in the USA)