Used to drive rivets. Rivets are permanent mechanical fasters usually hold heavy-duty material together, such as sheet metal. This one comes with a tiny wrench for adjusting tool.
Home Repair Resource Center
http://hrrc-ch.org/toollibrary/
2520 Noble Rd.http://hrrc-ch.org/toollibrary/
Cleveland Heights, OH, 44121
USA
(216) 381-6100