As has been said already, yes thats the critter right there. I don't know how I missed the link. These tools are available most any where tools are sold so Sears isn't the only place to find one. A very handy, serious tool. You can use it for various screw heads AND pull the adaptor off to use it with sockets. Mine has sat in my tool box for 40 years, almost my oldest tool. Mostly it sits, but when I need it there is nothing that works better.
Girl, you seem like the type that doesn't mind getting dirty and your curious so you need some serious tools. Build your tool set up slowly, buy when you need somehting. I can not tell you how many hours I've spent "making due" with the wrong tool when the job can be done in minutes with the right tool. Theae days we are lucky. If you have a Harbor Freight in town they can save you a BUNCH on tools your likely to use a few times. Some of their stuff used to be junk, but not so much anymore. For tools you are likely to use a lot, pay the extra money you won't be sorry. I have had Craftsman hand tools for years, but I discovered they have a professional set of tools, generally a litle longer, heavy hard chrome not for show. Hard Chrome is the stuff used on hydrolic rams, tough but not necessarily pretty. Every chance I get a Chraftsman Professional grade wrench finds it's way to my house.