GOOD MATERIAL: The air exhaust hose connector is made of premium ABS material, which is not easy to deform and also has excellent durability for long working hours. FIRM CONNECTION: Ensuring a firm connection without leakage, the portable air conditioner tube coupler enables good and efficient working effects. Easy Installation: The air conditioner tube connector supports both CW and CCW screwing, the coupler will simplify the installation for both left-handed and right-handed people. Best Match: The round air conditioner tube connector with 14cm size is widely compatible with various air conditioners, which is very practical. QUICK HEAT EXHAUST: This air conditioner hose adapter can tightly connect the hose to the air conditioning unit to largely promote the quick heat exhaust.