The mill is designed to chop small quantities of food, such as herbs or coffee beans.
Everything is designed around a glass jar and four are supplied with the mill (one is attached to the Mill on arrival, with three extras in the box), along with four lids (so whatever you process can be kept inside the jar).
Assembly of the product is straightforward - put the ingredients in the jar, insert the blades, then screw on the base and insert onto the outlet on the Kenwood Chef. I have a couple of issues with this; I am not keen about having to handle the blades quite this intimately and frequently, plus the mill itself is fiddly to attach to the outlet on the machine.
In terms of results, it manages to finely chop herbs quickly, as well as small quantities of things like tomatoes, but did not do so well with biscuits - it appears as though the blade mechanism gets clogged with crumbs.
Overall, I am reasonably happy with my only true reservation being the fact I have to handle the blades as much as required.