Two Point, Two Ball, SS Body Vertical Level Sensors Two Point, Two Ball, SS Body Vertical Level Sensors Filters Product Image | Model Number | Stem Length Product Image | Model Number | Stem Length Stem Length PSB2-150-2/2-S150mmPSB2-200-2/2-S200mmPSB2-300-2/2-S300mmPSB2-500-2/2-S500mm