Usage Tips: The furniture casters are made of metal with an oxidized finish. Matte brushed surface, fine workmanship, retro and fashionable appearance. Dimensions: Caster diameter: 25mm (1 inch), total height: 61mm (2.4 inches), upper inner cup diameter: 38mm (1.5 inches), inner cup depth: 32mm (1.25 inches). Easy to install. The brass casters have 3 mounting holes. When installing the casters, the feet must be placed close to the inside of the cup. To connect to furniture feet, the diameter of the narrowest part of the feet should be 25 mm or less. Flexible rotation: 360-degree rotation. Wheels and leg guards rotate independently and can be moved and operated freely. Ball bearings provide quiet and stable performance. Exquisite details and good stability. Wide range of uses: Suitable for piano legs, sofas, plant stands, bookshelves, toy boxes, storage boxes, Chinese-style furniture, European-style furniture, and retro furniture. Easy to move, making it a great choice for DIY hardware and furniture projects, adding a retro atmosphere to home furnishings with classic style and elegance.