MATERIAL: These furniture casters are made of sturdy metal, with a hard-wearing nylon wheel and durable rubber padSIZE AND LOADING CAPACITY: Wheel diameter is 50mm, the installed height is 8.7cm and it can be adjusted to 9.5cm. With a 5mm thick top plate, the furniture casters can transport heavy items. Maximum total load is 1500 kgHEAVY DUTY CASTOR WITH FLEXIBLE MOVEMENT: With a 360 degree swivel top plate and double ball bearings, movement is flexible and easy HEAVY DUTY CASTOR WITH ADJUSTABLE HEIGHT: Manual adjustment knob allows for height adjustment, easily moving heavy objects and ensuring anti-vibration performance. Height adjustment also helps keep items in place, even on uneven floorsPERFECT FOR: These furniture casters are perfect for heavy furniture, workbenches, welding tables, vending machines machines, medical equipment, laboratory apparatusWhen shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specificationsWe want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don't hesitate to contact us. We are here to help and will do our best to assist you.Thank you for choosing our product. We hope you enjoy it!