Uses a size 13 ring, state quarters work well, done with a 3/8″ punch size. Weighs around 6 pounds. Has two holes in the baseplate to screw it down to your workbench. Price is $135 plus $7.50 shipping in the USA.
$10 from every sale goes to Hörður Óskarsson, the original inventor of the Icelandic Heart Machine.
Watch the excellent video done by Gary Rosa: