I bought this set because I needed to drill some holes in thick sheet metal. There was a little more money to buy a set than to buy a single saw so I figured why not. They come in bags, each saw in its own plastic tube, with a threaded plastic cap. Each saw has its own center drill and Allen key for tightening the set screw. Cuts like a dream! Be sure to use some oil to lubricate the teeth as you cut and minimize the heat, but overall I was very impressed. If you're one of those people who grumble and leave 1 star because you thought you could get a professional set at a reduced price, you have to get realistic and realize that you got what you paid for - a good set cheaper hole saws.