Challenge Latex Inner Tube Size:700 x 33-40c These wedges are designed to

These wedges are designed to create a tilting option for aerobar brackets that do not offer the option to tilt

the Base 2

The curved design allows this longer more rigid pad to contour the rim for better brake performance

Features Sapim Sprint spokes and durable brass nipples

Challenge Latex Inner Tube Size:700 x 33-40c These wedges are designed toChallenge produces the only seamless 'one piece' latex inner tubes on the market providing a smooth, balanced ride with no pucker or bump like those found on other tubes. Latex tubes are lighter, thinner and more flexible than a butyl tube, increasing your comfort, lowering your rolling resistance, and helping to prevent flats. The tube also includes a removable core Presta valve making them compatible with both inline and external valve extenders.