Stans-No Tubes Alpha 340 Rim 700C ISO 622 24H Double wall Presta Black The First Implementation Of Stan'S Bead Socket Technology (Bst) A Short Sidewall And Wide Inside Rim Allows For Low Tire Pressure Giving A Firm Feel And Decreased Rolling Resistance Machined Sidewall For Improved Braking Can Be Used Tubeless With Any Road Tubeless Tire And Stan'S Sealant Or With Your Favorite Clincher And Tube