型號：PS–BT30–45°N / PS–BT30–60°N / PS–BT30–90°N / PS–BT40–45°N / PS–BT40–60°N / PS–BT40–90°N / PS–BT50–45°N / PS–BT50–60°N / PS–BT50–90°N材質為白十字鋼