Continental TPU Presta Tube Size:700 x 25 35mm 60mm Color Inner Link: Silver Size:S (29") Color Inner Link: Silver along with internal cable routing provides modern style Features the Highest Grade of Micrometer Thick TPUDeployed Across Seven Sealed Layers to Maximize Airtightness and DurabilityUncolored to Ensure the Highest Material Quality and Prevent Air Retention Issues Caused by Dye Related Surface ImperfectionsBase of Valve Shaft is Slightly Conical to Improve Fit to Wheel Rim and Reduce Unwanted MovementValve is Internally Threaded to Allow Use of Valve Extensions or Replacement Valve CoresLightweight and Durable Within a Small Packing SizeEasy to Repair with Repair Kit IncludedFor Disc Brake Use Only (Not Compatible with Rim Brake Bicycles)