Pitman Arm Steering Pitman Arm Castle Nut Included:Yes Center Link End Attachment Diameter:14 mm Color:Black End 1 Attachment Type:Spline End 2 Attachment Type:Male Taper Finish:Coated Length:131.58 mm Lubrication Type:Sealed Material:Steel Mounting Hardware Included:Yes Package Contents:Pitman Arm, Castle Nut, Zerk Fitting, Cotter Pin Spline Quantity:32 Steering Shaft Diameter:28.53 mm