This thing holds your case gauge in the unused die hole on my Dillon 550. I use the RCBS dies which crimp and set in a single operation. As a result, I only use three of the four stages. I thought it'd be handy to park a case gauge there.
It even has a hole in the bottom of the thing to allow a round to nest up in the holder as you pull the handle in that fourth stage.
Designed for 40S&W, I'll put a second for 9mm.
Some small bevels are 45 degree unsupported angles, which print fine without support on my setup.