These vises have rugged, machined, double guide rods and single-lead Acme screws.
The regular front vise is 7" x 14-3/4" overall with a 7/8" dia. screw and clamping capacity of 8-1/4" (less the thickness of your wooden jaws).
Our large front vise is 10-1/2" x 21" overall with a 1-1/8" dia. screw, and 13" clamping capacity (less the thickness of your wooden jaws). The larger vise has an offset center screw to allow vertical clamping without skewing.
Can be added to an existing bench or built into a new one.
Mounting screws included.