1、Convenient Use: Apply pressure to the 4 sides of the panel, simply twist the rotating grip handle, and all four sides will pull inward simultaneously. 2、Uniform Pressure: This 4 way pressure clamp ensures uniform pressure on the panel and prevents bending, twisting, or deformation of the wood panel. 3、Width Adjustment: Use plastic bars with 4 notches to construct any length, adjust the number of notches to obtain various widths, used for plates up to 6 inch thick. 4、Handle Operation: Rotate the handle clockwise to tighten the clamp, counterclockwise to release pressure, equipped with side pressure pad to prevent damage. 5、Aluminium Alloy: This woodworking clamp is made of excellent aluminum alloy, corrosion resistance, oxidation resistance, which is lightweight and durable.