High quality and super durable chain based on the Izumi-V with a focus on reducing drivetrain resistanceIncreased durability and reduced friction through the use of a specialty PTFE treatmentSuitable for track racing, BMX and single speed E-Bike use Narrow version of the KAI chain1sp1/2x3/32116LBlackUPC/EAN/GTIN: 4589931950906