The jaws are 12" to the center of the seat, and they will open to 18+". Any questions, let me know.
The item "Wetzler 12A Heavy Duty Deep Throat Bar Clamp 12 Jaws, 18 Clamp Timber Frame" is in sale since Thursday, July 4, 2019. This item is in the category "Collectibles\Tools, Hardware & Locks\Tools\Carpentry, Woodworking\Vises, Clamps". The seller is "gealer63" and is located in Chadwick, Missouri. This item can be shipped to United States.