What sets these front vises apart is the integral quick-release mechanism, designed for easy operation with one hand. Turn the handle counterclockwise to release and clockwise to re-engage.
Two sizes are available, both with 7/8" dia. steel single-lead Acme screws and double guide rods for smooth operation. The regular vise measures 7 1/4" × 14 3/4" and opens to 8"; the large vise is 10 1/4" × 21 3/4" and opens to 13" (maximum openings are less wooden jaw thickness).
The large vise has an offset screw to permit vertical clamping without skewing. Well made by a small European company, these enable you to incorporate a shop-made quick-release vise into a new bench or retrofit an existing one.