Check the listing for details. Superior Tool Internal Pipe Wrench 3/4 in. drive Silver 1 pc. Condition: New. Listed at 17.36 USD. Superior Tools Internal Pipe Wrenches are the tools to reach for when you need to remove broken threaded pipe ends without damaging pipe threads or surfaces. The unique Cam Action design provides a non-slip grip on the inside of nipples, pipes, and fittings.