This is simple glass door hardware at its best. The product can withstand 220 pounds of weight and is made of 304 solid Stainless Steel. The door rollers render them smooth and silent so barn doors can be maneuvered effortlessly. They are equipped with an anti-jump pin that will eliminate the risk of your door shifting or coming off the track, rendering your space safe for all. As opposed to being mounted on brackets, the system is affixed directly to the wall through the running rail with spacing sleeves making it simple to install. This high quality barn door hardware will last the test of time. Set includes: 2 door rollers; 2 door stops; 1 rail; 1 floor guide; 1 flush door handle; 4-11 sets of mounting accessories and tools for simple installation.