MATERIAL: These furniture casters are made of sturdy metal, with a wear-resistant nylon wheel and a durable rubber pad SIZE AND LOAD CAPACITY: The wheel diameter is 50 mm, the installed height is 8.7 cm, and it can be adjusted to 9.5 cm. With a 5 mm thick top plate, the furniture casters can carry heavy items. The maximum total load is 1000 kg HEAVY DUTY CASTER WITH FLEXIBLE MOVEMENT: With a 360-degree swivel top plate and double ball bearings, the movement is flexible and easy HEAVY DUTY CASTER WITH ADJUSTABLE HEIGHT: The manual adjustment knob can adjust the height, easily move heavy objects, and ensure anti-vibration performance. Height adjustment also helps keep objects in place, even on uneven floors PERFECT FOR: These furniture casters are perfect for heavy furniture, workbenches, welding tables, vending machines, medical equipment, laboratory equipment Product Description CASTER DETAIL Well-designed construction, rigid for heavy-duty projects Wear-resistant wheel, NBR-supported