Description Color: Natural WoodFeatures:Designed to be placed under a pianos legs to protect floors and carpets, metal and brass wheels from rust or tarnish.Anti-slip EVA pad at the bottom can prevent the piano from sliding and play a role of cushioning and shockproof soundproof.Selected hardwood, no splicing, hand polishednatural wood grain beautiful atmosphere, delicate more durable.They also work as heavy wheel chair floor protectors and bed leg floor protectors.(Mind the inner size becompatible withe purchase if you will use them as chair/bed/sofa leg protectors.)Note: The natural wood texture makes each piano caster cups slightly different in texture and color, this is normal.Specifications: Caster cups compatible with upright piano, pack of 4pcs.Color: Natural WoodSize: Bottom diameter 10.2cm / Slot diameter 5.2cmItem Weight: 250g/ 8.81oz(4pcs)Package Size: 10.5 * 10.5 * 10cm/ 4.1 * 4.1 * 3.9inPackage Weight: 300g/ 10.58oz