Flow Regulators -High Definition Accurate Oxygen Flowmeter Panel 0.1-1L Type Highlights Generic Brand High Definition Accurate Oxygen Flowmeter Panel 0.1-1L Type high definition oxygen air flow meter panel High quality ABS plastic material made, durable. Various sizes to choose from. Panel type, high definition and high precision. Widely used for oxygen machine and ozonator. specification: Size: 0.1-1L 94x21x27mm 0.2-2L 94x21x27mm 0.3-3L 94x21x27mm 0.5-5L 94x21x27mm 1-10L 94x21x27mm 1-15L 106x21x27mm 2-20L 106x21x27mm 2-25L 106x21x27mm 3-30L 106x21x27mm Package includes: 1x Air Flow Meter Note: 1. Please understand due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 1-3cm differences due to manual measurement.