Sturdy And Safe Support In each pack you will find 4 pieces. High quality wood allow you to hold piano in place while reducing the force on the floorAnti-Shock EVA Foam Mat Absorbs vibration and reduces noise without scratching wooden floorsProtects Rugs And Carpets Do not tear or stretch under weight while maintaining correct pedal height. The bottom of each saucer is lined with felt pads to protect the floor and offer sound insulation and slip protection.Preserves Original Color Wheel Protects the metal and brass wheels from rusting or tarnishingA Perfect Accessory These feet protect the wheels or piano legs from deterioration and prevent slipping, ensuring greater stability. These wonderful feet are ideal for not disturbing the neighbors on the lower floor while practicing the piano. It improves the piano and the room by providing a real classy look