Review on 160PCS Stainless Cotter Assortment by DYWISHKEY: Ultimate Convenience and Versatility by Tim Paolucci

that I really like. No rust or corrosion from stainless steel. I'm not sure how recyclable they are, but I try to use fresh pens as often as possible (hence the stainless steel kit). I have a 4x4 that's covered in all sorts of funk. Being my own mechanic, I like a sparkling clean cotter pin. The less corrosion on my nuts and bolts the better.