Review on Enhanced Woodworking Adjustable Carpenter Drill by James Jack

I bought this on the recommendation of a friend who is known in the community for his wood expertise. I was in the process of making small bookshelves when I got them and what normally takes a shelf 30 minutes by yelling at my 14 year old boy to keep the board straight ended up having the entire bookshelf done in 30 minutes was. lots of time for me! If you're building something that requires a 90 degree angle, this is a must!