A cushioned P clamp with a 15.9mm inside diameter, matched to AN8 hose. The clamp wraps the hose in a soft cushion inside a metal band, so the line is held firmly without the band cutting into the cover. That matters most with braided hose, where an unsupported run will saw through paint, panels and eventually itself under engine and road vibration. AN8 is a very common fuel and oil size, so this is one of the sizes worth buying a few of. Space clamps regularly along a run and near direction changes, and choose a clamp sized to the hose outside diameter rather than pinching a larger hose into a smaller clamp.