ROTH Cyclo II pericyclic pump, with 2-channel pump head, 3 rolls, 1 unit(s)ROTH Cyclo II pericyclic pump, with 2 channel pump head, 3 rolls, incl. tube cassette for tube with inner 4. 8 mm and wall thickness 1. 6 mm. For all applications in the laboratory and analytics and biotechnology applications. Pump head ( 62 mm) can be rotated 90 Easy cleaning thanks to easily removable pump head Simple to use with two rotary knobs: Continuous speed adjustment from 0 100%Reversible direction of rotation (clockwise counterclockwise)