1317119 -MUNICIPAL PLOW CHAIN BLOCK KITWorks with 7 16 in. 1 2 in. chain. Municipal Plow Chain Block Kit replaces the two standard lift chains with a single chain and slide block. This is typically used when the plow is coupled with a hitch without a telescoping lift arm, to achieve level lifting of the plow. The included pin can be used to prevent the chain from sliding in the block. Works with 7 16 in. 1 2 in. chain.