40mm toroidal ring made of V4A stainless steel, 5mm thick - 10 pieces 40mm toroidal ring made of V4A stainless steel, 5mm thick - 10 pieces Product detailsManufacturer Product details Toroidal ring made of V4A stainless steel AISI 316. Measurements: A = 40mm, B = 50mm, C = 5mm The price is for 10 pieces. Manufacturer