8mm hose nozzle made of nickel-plated brass with O-ring for 10mm PVC, PU, PA, silicone or PE hoses with 7mm-9mm inner diameter. G1/4" external thread. Height 35.5mm. Connection inner diameter: 6.6mm Note for water cooling newbies: The connections for inch hoses (7/16", 3/8", ½") are provided with a mm specification in our shop. This can deviate by +-1mm, which is not a problem, as a hose clamp is required for assembly. If you want to install the hose without a hose clamp, you have to choose a larger connection. With some connections that tend to deviate upwards, it may also be possible that, for example, a 13mm connection actually seals on a hose with an inner diameter of 13mm without a hose clamp. Overview: 10mm (3/8") hose clamp: none up to 8mm, required from 10mm 10mm (7/16") hose clamp: none up to 8mm, required from 10mm 12mm (1/2") hose clamp: none up to 11mm, required from 12mm 13mm (1/2“) hose clamp: up to 11mm none, from 13mm required>