If you are a fan of yo-yos, spin tops, and physics and looking for the perfect desk accessory, fidget/stress reliever, you will find that Tom Kuhn not only makes the premier, precision crafted yo-yos, he also creates finely machined and tuned spin tops.
Take 1/2 of the SB2 with its bullet point extending slightly beyond the outer body walls, with the flywheel “physics by design” built-in, my research (boredom∞²) to date has achieved spin-time of 5.1548 minutes.
That said, now we look at the Pocket Rocket. Same play. Spin-time to date; 2.9174. Too much fun! 2 in 1! This is real value! Check these out; https://tomkuhn.com/shop/silver-bullet-2-polished/ https://tomkuhn.com/shop/pocket-rocket/ With the Pocket Rocket, you will need a longer axle from the SB2. https://tomkuhn.com/shop/axle-shaft/
Get the set: https://tomkuhn.com/shop/sb2-pocket-rocket-set/