Features: Stability: This recorder stabilizer helps maintain the stability of the record during playback to ensure clear sound without skipping or vibration. Weight Design: Made from aluminum, it features durability and high-quality craftsmanship to ensure a long service life, is not easily damaged, and helps the record rotate more stably. Vibration Damping: A well-designed recorder stabilizer may also provide vibration damping to reduce the effects of mechanical vibration on record playback and improve sound quality. Versatility: Most recorder stabilizers are versatile and can be used with most 7-inch phonograph records. Easy Installation: Simple design allows for easy installation and removal; users can easily place it on the record's center hole without the need for additional tools. Specifications: Diameter: Approximately 37mm / 1.46in Thickness: Approximately 2mm Center Hole: Approximately 7.5mm Color: Black / Silver Material: Aluminum Speed: 45RPM Package Includes: 1PC 45RPM Record Adapter Note: Please allow 1-2cm error due to manual measurement. Pictures may not reflect the actual color due to different monitor displays.