Pitman Arm Steering Pitman Arm Castle Nut Included:Yes Center Link End Attachment Diameter:M12 X 1.25 Color:Gray End 1 Attachment Type:Spline End 2 Attachment Type:Taper Finish:Coated Length:124 mm Lubrication Type:Sealed Material:Steel Mounting Hardware Included:Yes Package Contents:Pitman Arm, Castle Nut, Cotter Pin Spline Quantity:43 Steering Shaft Diameter:28 mm