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<http://schema.org/description>
"The industry standard comes in all sizes.\r\n\r\nPremium-quality Bontrager Standard butyl rubber tubes feature a 0.9mm wall thickness for the perfect balance of weight savings and durability.\r\n\r\n-..."
<https://www.sharpbicycle.com/product/bontrager-standard-presta-valve-bicycle-tube-376235-1.htm>