Think about corrosion protection: covering choices, paint, or plating for extreme environments and de-icing chemicals

https://touch-wiki.win/index.php/Heavy-Duty_Driveline_Rebuilds_and_Balancing:_A_Purchaser%27s_Guide_to_Custom_Fabrication_and_Truck_Parts_Quality

Consider deterioration defense: covering choices, paint, or plating for harsh environments and de-icing chemicals, plus sealing practices to protect slip splines and bearings.