Especially for use with the EZ-RIVET system for hole punching and riveting, but can also be used alone and set the traditional, standard way. 5/32" length (inches) 3/32" diameter tube rivets, brass, unplated. There are approx. 100 pieces in the package. See a tutorial for the EZ rivet tool here: http://www.bsueboutiques.com/pi_ez_rivet_tool.shtml ALSO: find many more standard rivets and tube rivets/eyelets in the Brads and Rivets section in the left hand navigation bar on the home page.