Shim Washers 0.1mm / 0.2mm / 0.3mm / 0.5mm Thick ID=3mm~40mm A2 Stainless Steel. -Material:A2 Stainless Steel. -The product is made of high strength A2 stainless steel, combined with electroplating process, featuring high toughness, anti-rust, good performance and high strength.
eBay