Stans No Tubes Downhill Rim StripThis rim strip will fit most downhill rims measuring 36mm to 39mm wide. Moulded rim strips are equipped with 32mm removable core schrader valve stems.Suitable for but not limited to: Mavic: EX729 Sun: Double Wide WTB: Laser Disc DHDimensions: 52"x38mmBuy Stans No Tubes Wheels & Tyres from Chain Reaction Cycles, the World’s Largest Online Bike Store.