Review on CURT 40053 Stainless Trailer Diameter by Bryan Reynolds

Stainless steel trailer ball; My guess is that the washer and nut aren't stainless steel since they're a different color/finish. Another reviewer stated that you don't want stainless steel on top of stainless steel because the "attrition" can cause two identical materials (especially stainless steel) to fuse or "cold weld" when brought together under pressure . I gave the product a 4 because it was made in China, which I always deduct a point for (unfair, right?).