Compatible with most air compressed atomizer, oxygen machine, oxygen inhaler, oxygen bag, oxygen cylinder. Made of high-quality ABS material, safe and durable. Super elasticity, it can tolerate high temperatures and not cracked. Horn type interface can apply to all oxygen generators. Exquisite fixed circle, portable, and convenient to use. Oxy-gen machine accessories-for two people using simultaneously Universal connection type fits most oxygen sources less than 5.5mm diameter oxygen sources Ladder card slot Firmly fastened oxygen holes Widen the thicker tip Exquisite water container Exquisite fixed circle Food Grade Silicone joints Nasal pipette Humanized design Suitable for models DDT-1A/1B/1L/2A, DE-1Se-A Description: Condition: 100% Brand New Item Type: Oxygen Tube Material: ABS Color: As Pictures Shown Length: Approx. 230cm / 90.6in Package Includes: 1 * Oxygen Tube Note: 1. Manual measurement tolerance is 2-5g/cm. Please don"t mind your proposal. 2. Due to differences in display methods, the image may not reflect the actual color of the item. thank you very much!