These are really handy to have in your kit.
First class machining and secure bit holding. Nice for small projects.

I work on long-arm sewing machines. I need precision and tools with attention to detail. I use the Wera 051272 & 051273(esd) for tight spaces. I use these in place of "stubby" screw drivers. I also use the E6.3 bits (the one with the knobs on the end vs C6.3 which are the straight bits). I find the E6 bits are easier to handle with my large hands and now not so young and not so slender fingers and they have no slop in this type of Screwdriver. I purchased one of each 051272 (green/black handle) and 051273 ESD (yellow/black handle) and I keep slotted on one color and Philips in other handle so I don't have to keep looking at the tip. Instead, I pick up the screwdriver by looking at the color. I also appreciate one can open and close the bit holder with one hand.

This is one of the most underrated bit drivers made and is extremely usefully in confined areas.

The Rapidaptor bit holder locks bit's in place with authority. With a 1" bit loaded it is a compact, pocketable, capable screwdriver. With a Wera 89mm power bit it holds and acts like a precision screwdriver.

I love this driver! Changing bits is a breeze instead of a hassle. Perfect size to fit in pants or a shirt pocket. I have to keep tabs on it since all the guys at work try to steal it.