Harrington manual chain block is made in America and is one of the subsidiary brands of KITO Japan. Harrington produces manual chain blocks from 1 to 10 tons. most of Harrington chain blocks in Iran are knock off and made in China and only are produced following the appearance and in some cases with the same production standards. Harrington chain blocks consist of a G80 chain to be attached to the load, the G43 galvanized chain that is used for manual handling and the unit block.