Have a MBG 4 pin head on an Ascent slider/dovetail base for 3rd axis tuning.
20, 30, 40yd. pins are .019"
50yd. pin is .010", and used for dialing in longer ranges.
Feel its relevant to add that I'm shooting 520gr arrows from a 70# bow, so there's enough pin spacing to not be cluttered & blurry. And that bottom 'slider' pin available for practice shooting at longer distances is very nice to have!