HellermannTyton Connectivity does not offer a CAT7 cabling system. The reality for CAT7 cabling is that it offers little to no extra benefit over CAT6A.
CAT7 is designed to offer 10 Gigabit Ethernet (10,000 Mbp/s) at 600mhz. This is only 100mhz more than CAT6A.
CAT7 cabling is more expensive, there are also no CAT7 RJ45 connectors, unless you are using speciality connectors which are non-RJ45 based such as the terra connector, then you would be installing CAT6A connectivity as standard. This means you will only be able to test up to CAT6A parameters.