After reviewing the Home Depot and Lowe's grinders, I decided to buy these. There was some sandpaper in it, but I would suggest you buy another bag of sandpaper. I've been using it for 2 weeks and it works very well. My only complaint is that the tip of the grinder wears out much quicker than the other piece of sandpaper. Overall the price for a grinder is good (less than $30).