-. Brand : Caster Cups Ltd -. Color : black -. Feature : Designed for use with pianos / Protects wood, tile, and carpet from piano caster damage / Made for High-Quality Select hardwood / Underside of each cup is lined with black felt -. Label : Caster Cups Ltd -. Manufacturer : Caster Cups Ltd -. PackageQuantity : 1 -. ProductGroup : Musical Instruments -. ProductTypeName : INSTRUMENT_PARTS_AND_ACCESSORIES -. Publisher : Caster Cups Ltd -. SKU : MPS-HWC-X4 -. Studio : Caster Cups Ltd -. Title : Hardwood Piano Caster Cups, Set of 4