Designed for use with upright pianos.</br>Protects wood, tile, and carpet from piano caster damage.</br>Designed to be placed under a piano's legs in order to protect floors and carpets.</br>Made for High-Quality select ABS for use with upright piano.</br>Underside of each cup is lined with felt pad.</br></br>Product Description</br></br><p><br>New,Specially piano caster cups designed to absorb the weight of a grand piano and increase surface area on the floor, minimizing any kind of damage to your floors.They constructed of a heavy-duty advanced plastic which is very sturdy and durable, and is available for Furniture .<p><br> <p><br>4.0x3.0 x 2.0 inches<p><br> <p><br>Package : set of 4<p><br></br><br/>http://www.amazon.com/gp/product/B01E9UPL32