Color: Natural Wood Features: Designed to be placed under a piano's legs to protect floors and carpets, and to prevent metal and brass wheels from rust or tarnish. Anti-slip EVA pad at the bottom helps prevent the piano from sliding and provides cushioning, shock absorption, and sound insulation. Made from high-quality hardwood with no splicing; hand-polished for a natural wood grain appearance, offering a beautiful finish and enhanced durability. These caster cups can also be used as floor protectors for heavy wheelchairs, bed legs, or other furniture. Note: The natural wood texture may cause slight variations in color and grain between individual pieces, which is normal. Specifications: Product: Caster cups for upright piano, pack of 4 pieces Color: Natural Wood Size: Bottom diameter 10.2 cm, Slot diameter 5.2 cm Item Weight: 250 g (4 pieces) Package Size: 10.5 x 10.5 x 10 cm Package Weight: 300 g