8HC Swinging Bucket Rotor Benchtop Centrifuge, 120V, 18.9 x 14.6IN, 1/Each 300-16000 RPM Auto-Lock™ rotor exchange provides secure push-button application versatility and cleaning convenience ClickSeal™ biocontainment lids provide one-handed sample protection A clear shatterproof lid offers safe observation and access for photo tachometer made from a high strength polycarbonate Replacement O-rings for lids