SOLD - The Scientific Industries Roto-Shake Genie, model no. S1-1100, is a space-saving device for rotating/rocking samples in tubes. Its stainless steel platform is magnetized, which allows flexibility in choosing the tubes to be used. Speed is rated at 5-35 rpm, per its technical specifications.This previously-owned (used) model includes three (3) each magnetic tube holders with six positions, one (1) each with 12 positions, and one (1) each with three positions.Condition: Tested, fully operational, previously-owned, used, with some rust and chipped paint on the base of the unit. Sold as is without warranty expressed or implied. Buyer is responsible for determining the suitability of this product for their application.