♬【STRONG SUPPORT】- Quality Black Walnut Wood made upright piano caster cups. Can securely hold and support your upright piano for years of use. Also work for heavy wheel chair leg protectors and bed leg floor protectors. | ♬【PIANO CASTER PADS】- Protects wood, tile, and carpet from piano caster damage. Caster cups are an excellent way to help prevent indentations in your flooring due to the extreme weight from a piano's wheels or legs. | ♬【SKID RESISTANCE and SOUND INSULATION】- Designed to be placed under a piano's legs in order to protect floors and carpets, The thickness of EVA anti-slip mat on the bottom is 3mm, thick enough to provide good sound insulation, shock absorption. | ♬【NO SPLICING of the WHOLE PIECE of WOOD】-They are all constructed by Quality Black Walnut Wood without any splicing mark, no crack,elegant design enhances piano and room beauty providing a real classy look.which means they have real collection value. | ♬【100% SATISFACTION GUARANTEE】- Our store provides the high quality products and good after-sales services for our customers, the product has one year warranty. One year in if you are unsatisfied in any way with this product, we will refund your money, no questions asked.