Simplex BS (ISO) offset (crank) half linkKCM BS Roller Chain Simplex (RIV)Standard heat-treated steel
Simplex strand offset (crank) half link to BS (ISO) pitch standard. Adds half a pitch when chain length cannot be made up in full links, matched to KCM and equivalent OEM roller chain. Standard slip-fit pin retention. Heat-treated for full chain tensile rating.
