An assortment of connecting, offset, and regular heavy-duty roller chain links from Hillman. By the nature of their design, roller chain links are engineered for less friction and higher efficiency. These kinds of roller chain links are ideal for use in several domestic, industrial and agricultural applications. Full assortments of #43055 feature #60H and #80H heavy-duty chain sizes and contains six (6) refills comprised of Hillman item numbers #43056 - #43060 and #43182.