Gas-powered impact wrench. For railroad work! Plus great rail attachments for mounting the tool. Had no idea.
51-second video:
https://www.youtube.com/watch?v=k4qq...ature=youtu.be
Photos of the NR-11P at work:
https://s3-us-west-1.amazonaws.com/h...ct_wrench1.jpg
https://s3-us-west-1.amazonaws.com/h...ct_wrench2.jpg
https://s3-us-west-1.amazonaws.com/h...ct_wrench3.jpg
More: IMPACT WRENCHES NR-11P
Previously:
https://www.homemadetools.net/forum/...1740#post75040
https://www.homemadetools.net/forum/...121#post115609
https://www.homemadetools.net/forum/...1502#post74535
https://www.homemadetools.net/forum/...917#post119761