The threaded rod casters are made of rubber and pure brass materials, and the threaded rod is made of galvanized iron. hardness, meticulously polished, exquisite workmanship, bright color, beautiful and fashionable, sturdy and durable. Safe and stable movement: 360°rotating design can provide more convenient mobility and maneuverability. The ball bearings are quiet and stable, with fine details, stability, smooth rotation and strong load-bearing capacity. No noise: Rubber casters provide the elasticity of rubber wheels and the toughness and durability of metal wheels. Suitable for all types of floors, strong and durable, wear-, shock-absorbing and quiet. Beautiful brushed surface with a bright, stylish color and exquisite workmanship that adds elegance to any furniture piece.Easily move or position heavy furniture, suitable for use with sofas, chairs, tables, desks, closets, and other furniture pieces. Polyurethane Material: Our castor wheels will never scratch, smudge or damage your floors. Enjoy a carefree, safe glide across wood, hardwood, laminate, vinyl, tile and carpet floors all day long.. Good for all Floors: Our ball castors don't damage your expensive hardwood floor, it could not leave a track on your floor.