No More Heavy Lifting: Easily move pianos, upright pianos, moving containers, and other furniture with wheels. The casters are held securely in place by the sockets. Press Now: No assembly required! Simply slide the glides under the casters. Protects metal and brass casters from rust and water damage. Wide Application: Suitable for almost all floor types, including wood floors (laminate, durable parquet), carpets, stone floors (like marble and tile), and resilient floors like PVC and linoleum. Stable Helper: Features an extremely smooth surface and a durable plastic main body. Ideal for heavy pianos and furniture weighing up to 500 kg. These piano casters are designed to protect your floors while moving your piano. Works on hardwood, tile, and even carpeted floors. New design to absorb the weight of the grand piano and increase floor surface area to minimize floor damage. Crafted from hardwood, these solid oak casters offer lasting beauty and protection. They are engineered to support the piano's weight while safeguarding your floor. Specifications: Material: ABS Color: Black Dimensions: Single: OD: 3.94"/100mm, ID: 2.95"/75mm, Height with Pad: 0.87"/22mm Package size: 3.93"*4.13"*3.54"/10*10.5*9cm Application: General piano Product list: 4 * Piano Caster Cups Note: 1. Please allow for slight errors due to manual measurement. Ensure you don't mind before bidding. 2. Color may vary depending on different monitors, please understand. Note: Hello, please pay attention to your shipping address when purchasing products. If your receiving information (such as: name, street, house number, doorbell/email without name, etc.) is incorrect, the order will not be delivered correctly.