What's it called?

[MJarreau]

A friend has been teaching me about tools and jigs. He had something he called a "drill guide" used for drilling straight holes. I've seen it in posts in the past but do not know what they are called. The thing is a small plastic "guide" for drilling straight holes. It has interchangeable inserts for different drill sizes. It sort of looks like an hour glass with flat top and bottom surfaces.

Do you know what this is called and where it can be purchased?

Thanks!
Michael

 

[9GT]

Egg Cup: http://www.browntool.com/Default.as...25&List=1&SortField=ProductName,ProductNumber

 

[jcaplins]

drill housing and bushing kit

drill housing and bushing kit:

http://www.averytools.com/prodinfo.asp?number=25783

 

[MJarreau]

Exactly what I needed....

Thank you both!