Ridiculous Winches' desengaging winch spool. This is a CNC machined aluminum releasing spool. Benefits of a releasing spool is that there is no need to pull rope out against the engine. This spool will fit any keyed or non keyed 1" axle, and spins freely on it's own set of highspeed ball bearings when disengaged. The spool sides are made up of T-6061 Aircraft Grade Billet Aluminum and are 3/16" thick. The spool has three adjustable settings 4.5" inner diameter, 6.5" id, and 8.5". Product incudes full assembly instructions.