Clarks Self Lubricating 9-speed Chain Apparel Brand_HUUB The Serfas® USL-1600 E-Lume features

The Serfas® USL-1600 E-Lume features a precision CNC machined aluminum head with dual LED forward lighting

Designed to use with casual shoes

even when you get tired

Tempo: Versatility road series designed for the most enjoyable riding experience

For use with the 11 speed clutched derailleur fits 11-32 cassettes

Clarks Self Lubricating 9-speed Chain Apparel Brand_HUUB The Serfas® USL-1600 E-Lume featuresCompatible with the major gearing systems including indexed gears Teflon coated at the point of manufacture for self lubrication properties Nickel plated for wear and corrosion resistance Light, yet super rigid giving maximum efficiency Speeds: 9sp Size: 1 2x11 128 Links: 116L Connector: Quick Link Color: Black