Kayak Transporter

I saw Fishing the Flats one evening and a segment came up talking about transporting your kayaks on your boat. It uses the rod holders on your boat to place the kayak holders. You showed how it straps the kayaks to the holder for transport. I can’t for the life of me remember the name and can’t find them anywhere on the internet. Could you please tell me the name of the them and where I can buy them. Thanks