This fidget toy is really addictive. Ever since I started using it I cannot put it down. It’s easy to learn how to flick and you can master it within minutes. You can use it for hours and not get tired of it. It spins for a long time: I tested it on a table and it spun for 1:47 with a decent strengthed flick. The edges are a little sharp and it hurts when flicking hard with one hand. Mine has fallen many times and it has not broken. It was built with good quality plastic. The covers on the ball bearings do not come off easily. They show that they come off, but I have not been able to get them out. The weight is great for the spinner. When spinning you can twist your wrist and you feel the resistance. I have used other ones that are lighter than this and they do not have as much resistance. Lastly, it is small enough to put in your pocket and not be in the way.