Cock and ball: Turn off the prop is a plunger or a ball, rotating around its own axis.
旋塞和球形：关闭件是柱塞或球，围绕本身的中心线旋转。
2
The target point helps to direct the movement of the shooting arm and accelerate the straighten of the shooting arm, thus fully complete the flicking of the ball during the process of cock wrist.
It has the same movement rotated 90 degrees to mention only difference is that Jacket Ball Valve cock body is a sphere, a circular through-hole or channel through its axis.