Irwin Chain Vise Grip with 5/8" Baby Pin – Modern Studio Equipment.
Jetech 10 inch Locking Chain Clamp - Chain Vise or Wrench with 20 inch (50.8cm) chain and Steel Jaws - Made with Chrome Vanadium Steel : Amazon.co.uk: Everything Else
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Vintage Original Vise Grip Petersen 20R Locking Chain Wrench Pipe Wrench - USA | eBay