The end fittings are made of good quality material for strong strength. Ideal for use when adapting, joining, reducing or enlarging your pneumatic or air pipe. Can be used to connect various pipes, such as air pipe, fuel pipe, water pipe, etc. 14Hx1.5 mm to 18EDx1.5mm threaded, full port straight pipe fitting connector. Material: Metal Product Name: Hose Fitting Adapters Model: 14H to 18ED Weight: 100g Fitting Size: 14Hx1.5 mm - 18EDx1.5mm Thread Dia: 14mm / 0.55"; 18mm / 0.7" Length: 31.9mm 2 x Hose Fitting Adapters