Continental Supersonic Tube - 700 x 20 - 25mm 42mm Presta Valve MFPN=CSM983.9AZ0.ES0.BX Push-Pull style shifter mechanism with

Push-Pull style shifter mechanism with composite small lever and aluminum large lever

Frames may vary slightly from the nominal diameters due to tolerances and paint thickness

Compound Semi-Metallic Pad Shape Number 20 Backing Plate Material Steel

Chain Connection Type Reusable Master Link Color Gray Defined Color Gray Drivetrain Speeds 10 Half Link Chain No Links (links) 116 Weight 317 Width 5

It was designed for Wolf Tooth axles

Continental Supersonic Tube - 700 x 20 - 25mm 42mm Presta Valve MFPN=CSM983.9AZ0.ES0.BX Push-Pull style shifter mechanism withSupersonic tubes are further optimized for even lower weight and rolling resistance due to their thinner material and construction. Seamless and mold cured construction Removable valve core Shaft Type Threaded Tube Compound Butyl Valve Core Removable Valve Presta Med 41 55mm Valve Length Med 41 55mm Weight 50 ISO Width (mm) 25 ISO Diameter 622 Road 29" Labeled Size 700 x 20 25 Size 700 X 20