Donk
Piss Artist Formerly Known As OllieNZ
They're bloody good bits of kit but as Bahco said bloody expensive, Desoutter are the gold standard and you'll be doing well to find them new for less than $1k but can often be found used for less than a couple of hundred (over here at least). They're collet drills so you need a different collet for each drill size and a full set of collets can cost another couple of hundred. But once you've used one it's easy to see why they command the money they do.That little drill looks like it'd be the cat's pajamas for broken exhaust manifold bolts, my 90 degree drill is a tank compared to that.