Lucite Piano Caster Cups, Clear, Set of 3 for Grand Pianos - Virtually Indestructible$$Tools & Hardware Other

Specifically designed for use with pianos! Provides floor/carpet protection from piano casters 1You may also like Caster Wheel Assembly Compatible with Ferris 5023136 13x6.50x6 Pneumatic, Smooth Tread, 4 ply Silver Caster Wheel$$Tools & Hardware Other.