The S2 is the latest development on our pedal line up. We spent a long time developing the platform shape and pin placement for the best feel underfoot and the new double bush axle system is hassle free, long lasting and easy to service.Specifications:Precision engineered custom extruded 6061 alloy body,9 own design custom pin with flanged base,Chromo Axle,Sealed bearings with DU bushings,100 x 100 pedal face,1.25mm body concave which creates 2.3mm concave at the pins,Black,381g.