This is a selection of 2 adjustable Woodworking or Metalworking Welding C Clamps. One is marked 66678 CRAFTSMAN 8 on one side. The other side is marked MALLEABLE Made in U.S.A. The frame measures 12 by 5 ½ inches with a 9 inch opening. Open it is good for material up to 8 ½ inches. I found this one is no longer in production. The gray painted one is marked OLYMPIA 6” 150MM on one side and 146 on the other. The frame measures approx. 10 by 5 ½ inches with a almost 7 inch opening. The end of the screw is missing the swivel head which is usually taken off for welding. I found this model is also Malleable and now called 38-146. The seller does not show where this brand is made. Both have ends that do not center on the bottom when closed which is normal. They are used with rust and wear. Both turn easily.