Piano Caster Pads, ABS Plastic Piano Caster Furniture Cups ,Fits All Wheels Furniture, Floor Protector Bed. Non-Slip & Anti-Noise Foam (PA-17-A) The piano caster designed for use with grand pianos. The piano caster cups can protects wood, tile, and carpet from piano caster damage The piano caster pads designed to be placed under a piano's legs in order to protect floors and carpets The furniture caster cups was made for High-Quality ABS Material. Size: 4.0 x 3.0 x 2.0 inches