I am in no way a professional at detailing, and this was the first time I used claybar system on car paint before using polish and wax.. it didn't get the surface as smooth as I would like and didn't pick up a great deal of muck.. but it did seem to help and it glides very well with the included quik detailer.

Good value pack includes two clay bars, detailer spray and micro fibre cloth. I used this on a two year old car so I I didn't seem to remove much debris from the bodywork. It's very easy to use. Spray the detailer on each panel, then spray the detailer on the clay, and place the clay on the car moving in straight lines, not circular. It's time consuming and took me about one hour to do my Falcon. Afterwards, the bodywork is incredibly smooth, perfect for waxing. A word of warning, if you drop your clay bar on the floor throw it away, don't use it as it may damage your car. Also, the included bottle of detailer is ample size for a Falcon. I've got just over half left.
Easy to use
Time consuming