Set of 3 black high gloss grand piano caster pads. The cups are 4.75 inches wide, and the inside bowl measures 2-3/4"". They are great for protecting your floor from damage from your heavy piano. The bottom of the wood cup has a felt pad to prevent slipping of your furniture or damage to your floor. High quality hardwood caster cups.
These cups are also a good option for home furniture (for keeping your couch from slipping around for instance). Most furniture caster cups are cheap and made of rubber. Get these quality wood cups!