Cisco's standard rail clamps can fit any rail from 7/8” to 1½” in diameter, and Cisco's large rail clamps fit any rail from 1½" to 3”. These rail clamps are are machined from solid aluminum.

 Cisco's pulley’s are constructed with solid aluminum side plates, stainless steel sealed ball bearings, and are assembled together with stainless steel hardware. The sheave is recessed to prevent the line from being captured between the cover plate and sheave.  The 12/0 swivel is rated by the manufacturer at 1500 lbs (this swivel is constructed in the USA).

Cisco's pulley's are Big Jon compatible and can easily replace your existing worn out units. Cisco designed Cisco's pulleys to make sure that there is no harsh squealing, that results from other manufacturer's sheaves plastic components rubbing against each other. 

Position this unit in a place where your lines will stay farthest from your boat to help you catch some of the more timid fish which steer clear from your boats wake!