deal copper washers: material:copper,bronze,steel,brass etc. size:m5,m6,m8,m10,m12 ... and high pressure resistance, applicable to super low temperature. The copper washer is used in machinery fields. It has a good ... . We can supply you the softened copper, and it can be bended with hands. Copper content is more than 99.0%, and ... /plastic bag(as the picture show), or 100pcs/box. high quality copper washer