They are pretty easy to assemble. They are length-and-link tracks, meaning there are long lengths for the top, bottom, and angled side runs; and individual links for the parts that curve around the drive sprocket and idler wheel. All you have to do is assemble the indi-link workable tracks carefully if you still want them to work (not needed in my opinion), then attach them to the longer lengths to complete the track. I build them in two sections, upper and lower and then attach the two sections to the completed model (after painting both model and tracks) using the indi-links as the connection point.
What kit do you plan on using them on? If it is the M109A6 Paladin, they are the incorrect tracks (even though Italeri has them in the new boxing of it). Paladins use the slightly different T154 tracks. The differences are in the placement of the center guide (further back on the T154s) and the wear bar around the track pad (only on the two front corners on the T154, as opposed to completely surrounding the pad on the T136s).
Riich Model makes the correct T-154 tracks for the Paladin.
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