I have needed for a new colleague caliper. He had on his bicycle which ZOOM plan that this included by the factory. As these were then broken and were also very vulnerable, I bought this Shimano caliper. These fit perfectly and have an extreme braking. ATTENTION: This caliper grip very well: I almost threw it. :-) So always be careful slow if you do not know the effect exactly.
I highly recommend this very caliper because this is a top product for the price of SHIMANO.