Description: Made of high-quality Wood, 4 cups in 1 package. These Caster Cups are lined with felt on the bottom Protect wheel of piano from rusting. Protect floor from scratch causing by piano. Specification: Material: Beech wood & EVA Color: Wood Quantity: 4 Bottom diameter: 10.3 cm / 4.05 inch Groove diameter :4.9 cm / 1.92 inch Package Includes: 4 * Upright Piano Caster Cup
