S.S. = Stainless Steel?
Wrong.

No one heard of that superb carbon steel close tolerance polished to very tight tolerances special steel?
Hard almost like inlet/ exhaust valve stems.
Allways in 13 inch lengths. Can have the colours run off the end.
Been trying to figure out why 13 inches and not a foot since 1960 .
Although you can buy it in longer lengths the basic is still 13 inches. And why no centres?
Why?
SILVER STEEL.