Yakima SmarT-Slot Kit 5 - for TopWater

SmarT-Slot Kit 1 - Yakima SmarT-Slot Kit 1 T-Slot Adapter For HighSpeed And HighRoad Connects to Crossbars with T-Slot Feature; Fits HighSpeed & HighRoad

Or does the rack with the T-slot adapters fitted then slide into the T-slot bar? I am a bit confused Bars: Thule Wingedge Rack: Yakima HighRoad T-slot adapter

yakima t slot rack T-SLOT ADAPTER FOR TOPWATER

yakima t slot bolts adapter kit for the rails of your bed And we're going to be able to T slot accessories as