Was putting down lighters in my ceiling and only required one size for six down lighters. Bought the item, but under no illusion that it would not be high spec. The product did the job no bother, as I needed to cut through a false a plastic ceiling and plasterboard. Went through no problem and in quick time.
Good item for DIY jobs, probably cut at least a good twenty holes or more if you are cutting through plasterboard.
Only problem with this item would be how long it would last, and is certainly not industrial strength. Another problem is that there is not much depth, so you have to be mindful of how deep you are needing to cut. With this in mind the item has enough depth to cut through most plasterboards.
Would I recommend this product. Yes for DIY jobs.