I have been making them for years. They are made from 1"X 1" steel with a knurled handle. .The tool uses 4 contact points to clamp on the bar (the factory tool only has 3. Also the tool has 2 3/8 grade 8 bolts instead of the factory 1/4 inch bolts. I have them available here http://www.custommachinecomponents.com/shopdisplayproducts.asp?page=3&id=8