130mm Aluminum Housing Sliding Door Bottom Rollers Heavy Duty ODM Key Specifications Attribute Value Material Nylon wheel + aluminum bracket Wheel diameter 27mm Load capacity 50kg Color Customizable Type Sliding Door and Window Accessories Key Features & Specifications Material: Wheel: Typically made from Nylon (PA) or sometimes POM (Acetal) for durability, low friction coefficient, and quiet operation. Bearing: Sealed Ball Bearings (608ZZ) for smooth, quiet rolling with
