Smooth fast rolling center with gravel oppressing micro knobbed shoulders DTC - Dual Tread Compound is a combination of two different rubber compounds, L3R Pro (center knobs) and Stick-E rubber (corner knobs) TLR/TR - Tubeless (Light) Race is the lightest tubeless ready version of tires Kenda offers and also features an improved bead shape for better retention GCT - Features the GCT casing which wraps the tire from bead to bead with a secondary casing layer acting as a shield against punctures and sidewall slashes without the weight of conventional belting Tubeless 700x40 622 TBLS - Fold Bk/Crm 50 120 60a/50a DTDC/TLR/GCT NoUPC/EAN/GTIN: 047853644890