Piano Caster Cups Upright Piano Caster Cups Wood coasters Cups The piano casters pad is the production of red sandalwood,Size 4.0x3.0x2.5 inch The piano casters have the effect of sound insulation anti-skid prevent shock Designed to be placed under a piano's legs in order to protect floors and carpets There is a little different on color each cup mat, this is normal, Designed for upright pianosHigh-Quality Select Hardwood, 4Cups in 1 Package,