Piano Caster Furniture Round Wheel Cups Gripper Set Load Bearing ABS for Grand Piano [3 Pack] ( 5.5 x 5.5 x 2.6 inches)<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Designed for use with grand pianos </span></li><li><span class="a-list-item"> Protects wood， tile， and carpet from piano caster damage </span></li><li><span class="a-list-item"> Designed to be placed under a piano's legs in order to protect floors and carpets </span></li><li><span class="a-list-item"> Made for High-Quality Plastic </span></li><li><span class="a-list-item"> Underside of each cup is lined with felt pad </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41zJjwPtVIL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41yyDaUrxqL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41nDHavedeL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/413l1-WBmTL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41zJjwPtVIL.jpg" noproxy>