High Quality: Made of high-quality metal, thickened design, not easy to deform; surface drawing process, corrosion resistance, not easy to rust; thick hinge, strong load-bearing capacity. Easy to Use: Hidden hinges are installed on the door leaf to open at multiple angles, and the maximum opening angle is 140 degrees. The hinge is not exposed after the hinge, which is beautiful and practical. Easy to Clean: Metal material is rust and corrosion resistant, making it easy to clean. You just need to wipe gently with a damp cloth, then put it in a dry place to dry. Low Noise: Easily solve your noise problems. Roller track design, convenient and stable opening and closing, low noise, protect your sleep. Wide Range of Uses: It can be used in various occasions such as folding mobile doors, wardrobes, sliding doors, sideboards and kitchens, hotels, RVs, storage rooms, etc.