A tap and die set is very easy to use and although primarily used with metal, a tap and die can be used on other materials as well. However, if you are working with concrete it is advised that you use masonry drill bits instead as they are more successful with concrete.
A reamer is a drill bit that is used to shape or enlarge holes. Now, there are many different kinds of reamers. There are the adjustable hand reamers, the straight reamer, the machine reamer, the rose reamer, the shell reamer, the tapered reamer, the Morris taper reamer and the combination reamer.