Projekt Fixie - 80mm Cycling Fixed-Gear Single-speed Road Bicycle Stem Bar Clamp Diameter: 25.4mm / Angle: 20 deg Stem Length: 80mm, Stack Height: 40mm Steerer Tube Size: 1-1/8" Threadless (28.6mm) Road, BMX, Mountain, Fixed Gears, Fixies, Track, Singlespeed Bikes Compatible with other Projekt Fixie components