For our tracks, and most other "C" channel tracks including Thule, A.R.E , and others with the a channel measurement of approximately 3mm x 20MM as shown below you will use with the Landing Pad 1 along with the SkyLine Tower.
You may also be interested in this article, What are the dimensions of your tracks? which provides more information on the tracks themselves.
Example of a "C" Channel Track
Landing Pad 1