Kmc k810sl kool 332 chainsuperlight bmx racing chain that is 20 lighter than the standard kool chains and has the added advantage of being smooth on the outside so it does not snag on the grinds featuressize 12 x 332pins extra stretchproof hollow pins for enhanced durabilityextra features special dynamic configuration plate anti drop design superlightkmc chainsfor many years kmc has enhanced the technology behind bicycle chains through research development continuous innovation and