The GTR-AS adjustable-speed tube rocker from Globe is an excellent choice for essential laboratory tube mixing tasks. Its rocking motion, adjustable speed ranging from 0 to 30 RPM, and 30° angle ensure optimal performance. The silicone insert accommodates tubes from 0.5 mL to 10 mL, allowing users to simply place the tubes, switch it on, and leave it to operate. The GTR-2-AS adjustable-speed tube rocker from Globe is an excellent choice for essential laboratory tube mixing tasks. Its rocking motion, adjustable speed ranging from 0 to 30 RPM, and 30° angle ensure optimal performance. The included silicone inserts accommodate tubes from 0.5mL to 10mL, allowing users to simply place the tubes, switch it on, and leave it to operate. Features: Easy plug-and-play functionality Compact design requires minimal bench space Accomodates tubes from 0.5 to 10mL GTR-2-AS adds an additional platform tier for double the capacity.