Dedicated to providing high-quality musical instrument accessories and gifts. Our 4-piece set of piano caster cups is designed to enhance the beauty of your piano while protecting your floors. Each cup is made from high-quality hardwood, ensuring durability and a natural wood grain finish. The high-density felt pad at the bottom prevents sliding and provides cushioning and soundproofing. These cups are perfect for various furniture types, eliminating scratches and indentations on your floors. Please note that due to the natural wood materials, variations in weight, color, and wood grain may occur. Color: Natural Wood Material: Oak + EVA Dimensions: Length: 10.2cm Outer Ring: 7.7cm Inner Ring: 4.9cm Thickness: 2.5cm Package Contents: 4* Piano Caster Cups Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.