L-Clamps have many uses. one main use is for welding. they are made completely of metal so the heat will not damage any parts. L-Clamps are quick to use by just sliding the bar against your work piece and then a few turns of the handle and it will hold tight. At ToolKing.com We stock some of the leading brands like Bessey,Jorgensen, Irwin, and many more, all at amazingly low prices.