Overview
The most powerful hand technique in karate, a great strategic variation to a punch.
Compare to: Knife hand
Used in these katas
Unknown
Striking targets
Any non-bony part of the body, particulrly the neck, temples, ribs, and the sides of the joints
Technique
Extend the fingers flat, but maintain a slight bend in them. Tuck the thumb underneath, but not too far or the hand becomes curved, and thus weakened. Strike in an arcing motion, swinging the whole arm. Ensure that you maintain a slight bend in the elbow or you'll severely jar the joint. Strike with the pad of flesh at the base of the index finger, behind the base of the thumb in a slight downward angle to the target.
Strengths
Exceedingly powerful.
If thrown into a straight punching combination, the curving angle can be unexpected.
Gets around inexperienced blocks
Weaknesses
Slower than a straight punch so must be disguised
Can leave your centre very vulnerable to counter
