13 mm Diameter Aluminum Tube Spacer, Quantity of One

This accessory is required for: Quick-Seal Polypropylene Ultracentrifuge Tube (part #s 342414, 343665, 343664, 357334). Quick-Seal Ultra-Clear Ultracentrifuge Tube (part #s 344326, 344323, 344324). Adapter for Tubes in Beckman Coulter Rotors for use in Ultracentrifuge Rotors: VTi 65.2 (part # 362754) VTi 50 (part # 362758)