This item was received at the "Tatemono Megane, Machi Megane Exhibition" held in Osaka. I'm not in the engineering department, so I haven't used it, and it's never been used. I'd like to pass it on to someone who can use it, so I'm putting it up for sale. The colorful stick in the first picture is one of those that glows when you break it. I also received this there. (I'm not sure if it will definitely glow... please consider it a bonus.)