【PREMIUM QUALITY STRUCTURE】- The whole bench clamp is made of high-quality material with high hardness and stiffness. Designed for long-term service time. 【POWERFUL CLAMPING FORCE】- After fine grinding treatment, the surface of the clamp is smooth and flat. Clamping the workpiece without shaking, and the machining accuracy is higher. Jaw Width: 6" Jaw Opening: 5.9". 【HIGH ACCURACY SCREW】- The screw rod is made of high strength material which is not easy to deform, wear resistance, and achieves smooth rotation. Accurate to 0.002" on parallelism and squareness. 【REINFORCED & ADJUSTABLE】- The solid base and swivel handle make the use more stable and convenient. Easy to operate and improving working efficiency. 【WIDE APPLICATION】- It is an essential tool for fitters. Most work of the fitters is completed by using the clamping vise such as sawing, filing, chiseling, and some assembly and removal jobs.