4in/5in/6in Heavy Duty Plate Truck Caster Polypropylene PP Fixed Flat Wheel Trolley Flatbed Tricycle Caster Wheel

1. Caster is made of manganese steel, which saves more effort when pushing 2. Heavy-duty polypropylene material with impact resistance, weight resistance, acid and alkali resistance and fatigue resistance, etc. 3. With high wear resistance, high strength and other characteristics and a long service life 4. Wide range of application, suitable for various heavy-duty trucks, etc. 5. Strict quality control and quality assurance, high safety factor, can be used with peace of mind