He created the Kinetic Driver, a fidget spinner precision screwdriver ... is a big brass mass at the front end for high rotational inertia and a high-quality ceramic bearing at the back end ...

Fidget spinners are everywhere these days. You can buy them on any street corner for a few dollars, and both kids and adults are obsessed with them. The companies that make these hot new gadgets ...

There is something interesting about watching the arms of a fidget spinner go in circles. But is it a tool to improve focus or a distracting toy? Katie Leung Pui-yan is a partner, child and family ...