110 Pc. Copper Washer Assortment - TX7710-CO-YTThis set of copper washers will work well with most electrical connection, as well as automotive applications, such as brake lines, hydrolic lines, and oil lines. These washers are 100 per cent copper, so they are all corrosion resistant. Box measures 8 x 4 x 1 inches and weighs 8. 7 ounces This box contains 6 different sizes of washers to handle most every need Contents include: 5 8 inch, 1 2 inch, 7 16 inch, 3 8 inch, 5 16 inch and 1 4 inch sizes