Swoosh Spinner

The Swoosh Spinner: handsomely designed and ergonomic
I created this spinner with two goals in mind: comfort and speed. It was actually made at the request of a friend who wanted something that spins fast, and most importantly, something that's easier to spin in one hand. With this, I got to work. Several days of testing and prototyping, I settled on this design.
The grooves in the side of each bar are sculpted to fit the average persons index finger, which allows for better leverage while spinning. Though it's designed around the index finger, you can also quite comfortable spin it with your middle and ring finger, if you so choose.
This design is also my first design to feature a variable fillet. I used it mainly to make it more comfortable to spin, but it also makes it look really cool.
Technical Specifications
-Outer Diameter: 80mm
-Bering to Bearing Diameter: 52mm
-Height: 7mm
-Bearing Type: 608 (any skateboard bearing)