Complete hydraulic unit, working, bled and ready to bolt on and go. The Sole was Hayes entry level from around 2005/6 and kept down to a price by having only one piston moving, the other is fixed. This is in good condition, works well for what it is and comes with the nice quality rotor (160), set of mounting bolts and the bolts to mount the caliper. Good upgrade from mechanical disc or good for a cheap dirt jump bike perhaps. £15 posted by recorded post 
