Ritchey:
Proven 2-bolt design provides a class-leading balance between strength, weight and easy adjustability. Low-profile clamp reduces stress on lightweight rails and won't bottom out.
Material: 6061 alloy
Diameter: 26.8, 27.0, 27.2, 30.9, 31.4, 31.6mm
Total length: 300, 350, 400mm (including 100mm of minimum insert)
Offset: 25mm
Saddle clamp: standard
Saddle clamp torque: 13Nm (max)
Seat collar torque: not specified - follow frame/seat binder specification
Weight: 260g (27.2x350mm)
Colour: BB black
Sizes: 300x27.2, 300x31.6, 350x26.8, 350x27.0, 400x27.2, 400x30.9, 400x31.4, 400x31.6