Uke enters to strike 6th Form (Yokomenuchi).
Nage enters in, using his nearside hand to enter into Ukes inside elbow and harmonise with the attack. The kaitenage follows and with the balance disrupted Nage can follow in with just the single arm.

Nage = Sensei Mark Eastman.
Uke = Sensei Andy Lyon.
Clip Ref=ka15