Micron Grommet Machine TEP-1, #2 (3/8") Dies, #2 (3/8") Grommet & Washer 500 Pairs Set. (Antique Brass) Easily install grommets with one swift push. Able to be mounted to a table top for a sturdier working platform. Non-slip handle grip allows comfortable but firm place to hold. Change machine dies with ease. #2 Grommets - 3/8" diameter hole when set, 3/4" flange diameter, 3/16" length under flange