What is the name of this specific type of screwdriver?

A friend of mine let me borrow his ifixit screwdriver and I really like it. It is a shorter in length then most other screwdrivers, has interchangeable bits, has a post through it towards the top so it can used to apply force to the driver for stuck screws, the post has a strong magnet in it and the other half looks hexagonal, the top is concave. I think he said though that it has been discontinued but I would really like to try and find one as it has really helped me speed up my repairs. Thank you