Benchworld’s solid wooden or clear acrylic caster cups in assorted finishes are the best choice for a grand piano. Large, the most common size, has an outer diameter about 4″ and an inside diameter of 2.5″. This item comes in a set of 4 with black adhesive felt. The felt will be easy to slide whereas the rubber makes it harder to slide the piano.

Features

• Size: Medium
• Color: Black
• Hard Plastic
• Excellent for upright pianos with a small 2″ Caster
• Felt installed under to avoid scratches on your hardwood floor
• Set of 4