Vortex-Genie 2 Shaker allows you to control speed intensity by varying pressure to the head. The variable speed shaking allows you to adjust the level of mixing from gentle shaking to vigorous vortexing. Easy-to-change platforms allow you to adapt your shaker to a variety of applications. Use the pop-off cup for single tube shaking or the 3'' platform for multiple tube or flask shaking. What's Included: Pop-off cup and 3" platform. Power cord and plug (Euro plug on 230 VAC model). Enhanced vortex action for maximum high-speed touch mixing Solid metal casing with rubber feet prevents shaker from ''walking'' across your benchtop.