The pulley is made of stainless steel, which has the advantages of good rust resistance, corrosion resistance, no breakage, and long service life. The screws are made of stainless steel and the pulley height is adjustable. The high-speed bearing is smoother, and the external sealing ring design effectively prevents water and dust from entering, damaging the bearing. The full copper wheel body has stronger load-bearing capacity. This roller is particularly suitable for sliding doors made of aluminum or wood, whether it is a sliding door in a home terrace or a commercial place, it can easily cope with it. Before installation, make sure the track of the sliding door is clean and free of foreign matter to ensure that the roller can slide smoothly., Manufacturer: LT Easiyl