Pitman Arm Steering Pitman Arm Castle Nut Included:Yes Center Link End Attachment Diameter:12 mm Center Link End Attachment Pitch:1.25 Color:Gray End 1 Attachment Type:Spline End 2 Attachment Type:Taper Finish:Coated Length:114.5 mm Lubrication Type:Greasable Material:Steel Mounting Hardware Included:Yes Package Contents:Pitman Arm, Castle Nut, Cotter Pin, Zerk Fitting Spline Quantity:42 Steering Shaft Diameter:29.4 mm