Tried to get this as a spare from so many places and finally found it here at Bumsonthesaddle. I was skeptical initially but at the price point decided to go for it. It was definitely an eye opener. The product is exactly what is advertised. It has enough grip to stop my Autum 1.0 where so many others have failed.
Two piston caliper, gives pretty decent braking for medium speeds. Nice product and genuine