About the Thule Xadapt12 Kit
Secures a watersport carrier to a T-track rail
If you already have a Thule AeroBlade roof rack system and want to add a Thule Portage canoe carrier or a SUP Shuttle paddleboard carrier, then you'll want to also get the Xadapt12 kit. These adapter plates bolt to the bottom of your watersport carrier's holders and features sliding square nuts that fit into your load rails' T-track and tighten for firm and secure attachments.
More details on the Thule Xadapt12 Kit