Vittoria Air Liner Light XC Size:29 x 2.1 2.4" Supplied with 3 sets of BK12 Supplied with 3 sets of different shaped rubber inserts to fit a variety of rim shapes and create the perfect valve to rim seal Features8 mm chain with fabric sleeve to prevent damage to the bicycle‘s paintworkThe chain is made of specially hardened steelTwo component number reels guarantee long term readability of the digitsIndividually configurable codeMfr Claimed Weight1990g The Air Liner Light provides all the pinch flat resistance and tyre performance boost of the Air Liner MTB but at a fraction of the weight – it weighs even less than the sealant you need to mount the tyre