Ox jaw - Seiryuto

Red circle indicates striking surface

Overview
At first glance, this technique looks almost identical to a shuto. However, whereas a shuto is primarily delivered in a circular motion, seiryuto is delivered in a diagonal punching motion. The key differences between the two techniques, are seiryoto's bent wrist, and the actual striking surfaces of the hand. However, both can be used against similar targets, but seiryuto has a slightly wider range.

Compare to: shuto

Used in these katas
Unknown

Striking targets
Throat, joints, temples, jaw, neck, ribs, groin, sternum

Technique
Create a knife hand by mostly straightening your fingers. Punch towards the atrget as though to hit with the figer tips, but at the last second, snap the hand out of the way and strike with the bone at the base of the palm, which is allegedly one of the hardest in the body.

Strengths

A fairly powerful technique that can be delivered to boney parts of the body as well as softer targets

Doesn't require a lot of wind up to deliver power

Weaknesses

Fingers are vulnerable