12 in, Free Outside Diameter 4.109 in Thk, System of Measurement Inch, Location Style Internal, Thickness 0.109 in, Fits Shaft Diameter Not Applicable, For Bore Diameter 3 5/8 in, Fits Groove Diameter 3.291 in, Material Steel, Finish Plain, Material Grade/Class Ungraded, Ring Type Housing Ring, Pack Size Small Pack, Manufacturer Location Globally Sourced, Ring Sub-Type Standard.