Get current pricing for Sorvall, Sorvall-44742-ID Sorvall Hb 4 High Speed Rotor 4 X 50ml 13,000 Rpm Max Speedstock Number: 8297949part Number: 9211845category: Rotoroutside Dimension: 11.25 X 11.25 X . Product Category: Lab Equipment, Sub Category: Centrifuge - Benchtop: