Hose kit is compatible with the 717 and 718 calibrators 100 PSI and below. Translucent accessory hoses allow the technician to easily identify if there is oil or other contaminants in the hose before they get into your calibrator. The kit contains three translucent hoses one meter long, easy to connect push fit connectors for both connect ion to the calibrator and the device under test. One 1/8" to 1/4" NPT female to female adapter.