Supply seals, the specifications are 6 mm x 4 mm, 7 * 4,8 * 4,9 * ... prevent the theft of more useSupply common seals, the specifications are 6 mm x 4 mm, 7 * 4,8 * 4, ... to inquireThe original seals are made by metal LEAD, this materials are not good for environment, Now we are opening the seals for ... to inquiry for the detailed information! seals meters made by Aluminum Environmental protection