Hi everyone, I'm translating a list of tools and I found this term: "Fastener Drive Bit Set". I have no context at all. Other words of the list are related to hardened steel, drilling precise holes, fast cutting tips, etc. I think a picture of the set is this: http://www.grainger.com/Grainger/IRWIN-Fastener-Drive-Set-1AVL9?Pid=search I have no idea how to name that in Spanish. Any help at all??? Thanks a lot!!!