Connection hose suitable for use with U-tube pressure gauge. This accessory is designed for U-tube manometers and is made of silicone, measuring 5 m in length with a maximum pressure of 700 hPa (mbar). It includes a single pressure connection hose with a diameter of 4/6 mm and a length of 50 cm, without a connection adapter. The pressure set comes with a gas extraction probe and includes two silicone hoses, each with diameters of 4 mm and 6 mm, along with a T-piece connection for both sizes. Additionally, it features a 350 mm long stainless steel Pitot tube for speed and RPM measurement. These are Testo accessories for digital manometers.