The least expensive way to ditch 40 grams of rotating weight on road tubes! Patented, oversized, 4.8cm valve base prevents tearing. Partially threaded valve stem for cleaner interface with pumps. Our lightest and most supple tube offering. The Turbo ultralight tube, with patented valve and valve base, is proven in rolling resistance testing to reduce drag by as much as 13% per wheel.Packed in talc for easier installation.,4.8cm valve base prevents issues of valves tearing off.,Smooth at the top for easier pump head insertion and reduced wear on pump internals.,Thinner tube design saves approximately 40 grams of rotating weight.,Thickness: 0.6mm.