Te gatame video
Info about "Te gatame video"
Te gatame (hand arm lock) is one of the official 29 grappling techniques of Kodokan Judo. It is one of the nine joint techniques of the kansetsu waza list, one of the three grappling lists in Judo’s Katame waza enumerating 29 grappling techniques.
From Uke’s right side, slip your left hand through Uke’s right armpit , and grasp his left collar. Take hold of Uke’s right wrist with your right hand, straighten Uke’s arm and lock his elbow.
From Wikipedia  and greenbankjudoclub.co.uk