H226-1 前圆碗形口(front roundbowl-shaped)280mm固定头   

    H226-2 后圆碗形口(back roundbowl-shaped)280mm固定头 
    H226-3 左圆碗形口(left roundbowl-shaped)280mm固定头 
    H226-4 右圆碗形口(right roundbowl-shaped)280mm固定头