Looks like swings

https://www.reddit.com/r/judo/comments/ee1ny6/sambos_casting_punch_a_good_way_to_punch_and/

https://forums.sherdog.com/threads/the-casting-punch-aka-bad-hook-or-s-y-bolo-thrown-with-arm-power.3363261/

http://www.blairturton.com/blog/tag/casting+punch

https://youtu.be/_HJiOc-qNik