The video below is the exercise. The second video focuses on proper footwork.

Ben Sensei shows us how to go from nikyo to kotegaeshi, then to sankyo and eventually to shihonage and back. Again this is good practice for wrist strengthening and stretching, as well as for henkawaza. Notice this exercise focuses on wrist grabbing while changing techniques.

Here is another angle on a different day of the same exercises. This time, Ben Sensei is focusing on proper foot positioning.