Features: Do not use while trailer or truck is in motion, try and avoid placing all of the weight in the center of your truck or trailer. Ramps with hook-ends fit into a specialized bracket channel, effectively securing the ramps in place without requiring tie-down straps to prevent ramp kick-outs during loading. Specifications: Material: steel Color: silver Size: about 48 Inches x 4 Inches (LxW) Package includes: 1 x Ramp bracket Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays.