Heavy Duty - Digital Variable Speed Reciprocal Shaker*Box Carrier and all accessories sold separately. Eberbachs E5903 Digital Heavy Duty Variable Speed Reciprocal Shaker is the same as the model E5900 but with DC speed control, digital tachometer and a digital countdown time. Designed to shake large containers or large quantities of smaller containers this unit can handle loads up to 100 lbs with the capability of running 24 7 while needing only routine maintenance. The E5903 is powered by a 1 2 hp