This is the counter to the third remedy master of dagger, who makes the play with the reverse hand. I make this bind against him. Armoured and unarmoured, this is good and secure. And if I do this against someone without armour, I will break the hand and also dislocate it. And the pain will make him fall to his knees at my feet. And if I want to strike him, I can do that easily.
As you strike at your opponent with a reverse strike, they make a hooking block with their right hand, intending to spin around you to your right side so as to attack you from behind as shown by the 3rd master and all his scholars. Counter them like this.
Due to the cover your opponent has made, the point of the dagger will probably be extending over the top of their arm. If it is not, you need to swing it over quickly. Step in close with your left foot. Your opponent will be moving around to your right side. You want to turn as they do, so that you stay facing them.
As you step, reach up with your left hand and grab the tip of the dagger. This forms posta mezza porta di ferro dopia incrosada, with the dagger blade capturing the wrist using a 3rd class lever. This posta cannot make long covers, so you must be very close to your opponent for this to work. This is the moment pictured.
Pivot on your left foot if necessary so as to keep your opponent directly in front of you. Keep your weight low and your elbows in tight, pulling them back and locking your crossed forearms against your centre. Roll your hands down as you do so.
The leverage imposed on your opponents arm will break the wrist and force the forearm to a vertical position. Your opponent will fall to their knees at your feet. With your left hand, let go of the dagger and roll it across to grab the broken wrist. The pain and shock this induces will give you complete control over your opponents movement. It will also free up your right hand, still holding the dagger, and giving you the opportunity to strike them at will.