if not you can add a link or two on the ends.. EASY to do with a couple repair links
I had a dedicated snow plow I used when I lived in the mountains of Komieville , the chains were used 100% of the time do to the steep mountain I plowed, I rebuilt them many times , was a fall to do list item ... cross links always worn badly in one season and side chains saw lots of wear over the seasons use also .. I kept on hand repair parts and could actually build from parts a whole chain
best tool to use IMHO is a 24' set of bolt cutters, for cutting out the bad parts and they have a perfect notch right behind the jaws for re-crimping the new replacement parts... only tool needed for re-building .. I carried a bucket of assorted parts in the back end of the FJ40 plow rig so when I broke a chain I could jump out and fix it in a couple minutes.... same chain set lasted 15 + years when I sold the rig.