Color: Natural Wood Features: Designed to be placed under the legs of the piano to protect the floor and carpet, metal and brass wheels from rusting or discoloration. The non-slip EVA pad on the bottom prevents the piano from sliding and plays the role of cushioning and shockproof sound insulation. Selected high-quality hardwood, no splicing, hand-polished natural wood grain beautiful atmosphere, exquisite and more durable. They can also be used as heavy duty wheelchair floor protectors and bed leg floor protectors. (If you will use as a chair/bed/sofa leg protector, please note the interior dimensions before purchase.) Note: The natural wood grain makes the grain and color of each piano caster cup slightly different, which is normal. Caster cups for upright pianos, 4 in a pack. Color: Natural wood Size. Bottom diameter 10.2 cm / Slot diameter 5.2 cm Item weight: 250 g / 8.81 oz (4 pieces) Package size: 10.5 * 10.5 * 10 cm / 4.1 * 4.1 * 3.9 inches Package weight: 300 grams / 10.58 ounces