Review on Uxcell Diameter Stainless Extended Compressed Power Transmission Products for Springs by Jason Unruh

Obviously NOT stainless steel as advertised. but they win, it's too cheap to worry about the fight. not stainless steel, as in the photo, dark brown. reacts strongly to a magnet, another bad sign. I'm building an outdoor prototype, if it works I'll be ordering stainless steel elsewhere again.