No instructions
I was disappointed that this product did not come with instructions.  I am new to doing my own nails.  I couldn't even figure out how to change the drill heads (I had to get my husband involved and he had trouble getting the lock to release).  I would have given this a higher rating if it had just come with instructions (as in this is how you change the drill heads or this drill head is for when you want to do XXX, etc.).  That aside, the kit is nice to have for anyone who maintains their nails.
Rating: 3 stars