The Vevor 4" lock down precision milling vise is built for stable, accurate clamping in milling, drilling, and precision parts work. It features a heavy-duty cast iron body with hardened 45# steel jaws for durability and long service life. The enclosed screw design helps keep debris out for smoother operation and easier maintenance. With up to 19 kN of clamping force and 0.002" parallelism and perpendicularity, it is designed for precise, repeatable performance.