This super flexible and durable drain hose is made of premium EVA and PE, anti-aging, non-toxic and frost-resistance. The end of the drain hose is made of thickened material, with great flexibility and not easy to deform. Universal design, fit for most standard air conditioner, insert the formed outlet of the air conditioner into the end of the drain hose without any tools. It also can be used as a semi-automatic washing machine inlet hose. With great flexibility and high resilience, you can bend it freely based on your needs. Can be restored to shape immediately after being squeezed, it is more durable and has longer service life than other common air conditioner drain hose. It should be noted that: the drain hose should have a proper tilt angle when installing it on the air conditioner. Its better to hang over desired overflow area. The diameter of the end which connects the air conditioner has an inner diameter of 18 mm/ 0.7 inch and an outer diameter of 27 mm/ 1 inch. Please measure your air conditioner to check the outlet size. And the length of this drain hose is 1.6m, can meet daily use.