I did not think there was any product setting like this! The mirror of the motorcycle purchased in second hand, the whole length was changed to short one, almost his own arm was reflected and it was in a state that the backward side was hard to see. Since there was a junction with an intermediate screw by chance, it removed, measuring the screw diameter and the required extended dimension, and if you search the net for something, it bingo with Monotaro san so I bought it. Since then the catalog came, there were lots of products that opened handy reaching quite itchy places when opened. I would like to keep the catalog without throwing it away!