Here's a Caldwell brass picker and a nut picker. The wires in the brass picker are a little heavier, and slightly closer together.
http://i3.photobucket.com/albums/y88/rkcoyote/20150808_122127_zpse3648682.jpg
http://i3.photobucket.com/albums/y88/rkcoyote/20150808_122127_zpse3648682.jpg