Features: Up to 4inch thick table top plate can be clamped. This vise mount can be mounted on the edges of all types of computers. Easy and quick installation and disassembly. No need to perforate the countertops during installation, equipped with 2 rubber washers to prevent the table from scratching, 2 washers, to protect the parts (to ensure that the rubber washers are used well, please refer to the product photo before use. The fixed chin is adjusted to the larger opening, and then the rubber gaskets is installed in the predetermined appropriate position, fixed at the ends). This vise can accommodate different parts, the O-shaped Swivels base allows rotate to 360 degrees, even if you are left-handed, you can rotate the vise to the position that suits your work. Suitable for daily use, garage, minors repairs, fashion designers, carpentry, jewelry, and so on. Specifications: Material:Carbon Steel Jaw width:90mm/3.54'' Package Includes: 1Piece Clamp On Vise note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color.