【Inertia-Driven Full-Stroke Operate】Engineered with a unique inertia mechanism, this woodworking leg vise allows full-stroke expansion or retraction with a single swift pull of the handwheel 【CNC Machined Construction】The handwheel and Φ30mm screw rod are precision-machined from 45# steel, while the integrated parallel X-bracket features CNC aluminum alloy construction 【Adjustable Support】The one-piece parallel X-frame delivers exceptional stability with a height adjustment range of 90mm to 310mm. Equipped with 15-type linear rails and bearing end faces, it ensures smooth, wobble-free vertical movement and consistent clamping pressure 【Parallel Design】X frame styles parallel layout not only looks elegant but also effectively distributes pressure when bearing heavy loads, stability during use 【Professional Workbench Upgrade Kit】This benches vise clamps kit is the ultimate custom workbench upgrade for professional carpenters, furniture makers and hobbyists. A great addition to any woodworking shop or home workshop