I thought about it but judging from the construction of the arms and the fact that not all the individual parts can be disassembled properly, I gave up.
I think the arm is stainless steel but the part near the nut - not sure what it's called - isn't because mine is pitted.
Does anyone know if the left and right wiper arms are the same? SLS has the left listed for sale but not the right one so just wondering.