High-definition Oxygen Air Flowmeter Panel Type High quality ABS Plastic material made, durable. Various sizes to choose. Panel type, and high accuracy. Widely used for oxygen and ozonizer machine. 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. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin