Hand drills are convenient but often are limited in use because the bulk of the drill body interferes with their utility. This 14" chuck extender with 3/8" capacity keyed chuck makes it possible to do many more things with a hand drill.
With it you can drill (or drive screws) in areas that would normally be unreachable. It also allows you to use a number of accessories that would be unmanageable if chucked directly in a drill.
The sliding aluminum handle on the chuck extender lets you apply greater lateral force on attachments with all the stress being absorbed by the extender chuck, not the drill chuck. Various wire wheels, cup wheels, buffing wheels and abrasive attachments can be used with greater force and in more limited-access areas than is possible when chucked directly into the drill.
You will undoubtedly find more uses than we mention here.