Mitsubishi Precision Co Ltd. designed and built a fidget spinner based on MinebeaMitsumi Inc.'s ball bearings to break the Guinness world record for "Longest duration spinning a fidget spinner on one finger." The team of 50 people spent 6 months creating and perfecting the design, with a heavy brass outer ring, and a lightweight aluminum center section, which spun for 24 min 46.34 sec. You thought it was over didn't you? You thought the whole fidget spinner thing was something you wouldn't have to hear about again. HA! The article does state that you can buy one of these rotating masterpieces from the Japan Handspinner Club for $450. NMB makes some seriously high quality bearings, couple that with the lack of battery and this one has almost no chance of exploding. "By incorporating technologies used for space satellites, we were able to realise smoothness and overwhelming rotation time that we’ve never seen before. We also applied bearing manufacturing technologies used for aircraft as well as wheels and rings. We use materials with the highest strength among aluminum alloys and highest quallity brass so that wheels and rings are thoroughly thinner and lighter than conventional ones," - Shigeru None.