Just spotted these brakes at Chain Reaction, no rotor or lever must most shimano stuff is interchangeable.
These are the top of the range brakes that Shimano make. A bargain for £30, if I hadn't just bought a full set of Deore's I would have jumped at these. Front and rears available.
Shimano's mono-body caliper was designed to give its users a lightweight caliper while delivering strong braking power & maintaining controllable modulation.
Super lightweight Mono-body design