Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: do you have to get special bits? most bits are 5 inches long...the jig is over 5 inches in depth
Document: The problem, is drilling a new hole in the end of the existing auger shaft. The hole must be square and centered, for everything to fit properly. This job used to mean that I had to pull the entire auger shaft out of the assembly (some of these are 20+ feet long, and weigh maybe 80 pounds), haul it to the shop, figure out a way to jig it up in the drill press, all to drill one hole.
What I did in my first test project was punch a hole in the (wood) surface, then felt around for it with the drill head, placed the guide appropriately, then drilled.Note that one loses an inch or so of potential drill depth, and smaller drill bits tend to be rather short. Also, some have noted the drill guide coming with a small case. Mine came only in a blister pack and without a case.
Well made and designed, wished I'd had this a long time ago, it would have saved me time and money. Even has it's own little case it goes in to protect.
Shine a light down the V groove, and you can look down the hole you will be using for a guide, to center the jig.It is one of those tools, that is so simple, and error proof, everyone who does any amount of drilling, should have one.
On the backside of the jig, a V-groove is machined, so that if  you clamp it to a shaft or pipe, the jig is automatically centered, and squared to it. You are only limited to using it for the drill bit sizes on the jig, and in spaces where you can securely clamp it.
I have used several drill guides. This one seems the most convenient and useful of the several I own.Upon receipt I tested it by drilling holes in a 3/8&#34; dowel. I clamped the jig to the dowel.
The guide works but isn't particularly easy to use. The drill bit contacts the sides of the holes causing the guide to move a little. Tried it with one of the smallest bits and the bit broke because I wasn't exactly straight into the hole. If I could do that, I wouldn't need the guide. I'll probably try a guide that holds the drill, not the bit.
This drilling guide is just what I needed to drill straight holes in standard sizes, particularly in areas where a larger guide would not fit. Just be aware that the guide is about 1" thick, so short bits will not penetrate too far beyond the guide. You'll have to buy longer bits, or at least start the hole with the drill guide, then use the straight hole you just drilled to guide you when finishing the hole without the guide.
Interesting product. Works well, helpful, but doesn't guarantee straight holes when using a small bit because they can curve, whereas thick ones can't...so it works better for thicker bits. So for small bits you wish it were a little longer, except that the longer it is of course the shorter is the usable portion of your drill bit, and thin bits are typically already make short, so I guess this is pretty optimal.
Turns a 3 or 4 hour job into one that takes less than one hour. While maybe not Space-Shuttle precise, it does VERY well, guiding the drill bit straight and square. Just be sure you have it clamped securely, so it can't wiggle.The way it works, is very simple. This is a simple jig, that has a series of holes precisely drilled through it, which act as a guide for your drill bit.
Answer: yes