This time Alexey Voevoda didn’t write the weight of the dumbbell, see what he wrote below the video.
alexeyvoevoda (Google Translate): ” A little hard to elbow through, because for a long time I have comminuted fracture of the ulna, but overcome through the pain – a real pleasure “
I don’t know if this translation was good, but in case you want to know, click the next link to see some X-rays with ► Comminuted fractures (they look pretty scary).