I need to try making a bowl. I have a cheapo craftsman lathe I got off craigslist. Just made chisel handles with it so far. Here's some made from peach.
The Stanley 45 and 55 plane set included a similar screwdriver. This looks a little larger than ones I've seen, but maybe earlier sets had a different driver.
I usually pass on them if they are missing the pad. This is good to know if I find a clamp that I want that's missing the pad.
Nice that they pop into place.