50kg Tandem Stainless Steel Door Rollers For Sliding Windows Adjustable Product Description High-quality stainless steel door rollers designed for sliding windows with adjustable features and exceptional load capacity. Product Attributes Material High carbon steel bearing + nylon + stainless steel frame Load capacity 50-500 kg per roller (depends on diameter/wall thickness) Corrosion Resistance Saltwater-resistant (316), Food-safe (304) Noise Level Low (with rubber/nylon
