Our spinner specification:

It is not be 3D printed. It is ABS injection molding. the spinner has a smooth finish, and not has sharp edges.

Central bearing: Si3N4 Hybrid Ceramic, in order to have a minimal rolling resistance for the longest spin times. the average spin time can be at least 2 minutes. Central bearing is well balanced, so when spinning in hand and on the table it is not wobbling. 

so the most important factors are being smooth and silent and quick.

Plastic center caps can be sturdy enough and not easy to fall out after a while.

It has a high-grade plastic, so you don't have to worry about the metallic smells on your fingers that you get with metallic based spinners.

1. THe new bearings will not reach its peak speed directly. Hybrid ceramic bearings need to run in, and it has lubrication effect. THe more play the more smooth, the longer the longer.

2. Hand spinners belong to the DIY products. Each spinner in each player's hand will have different performance. so, more running, more research, more debugging, It Will achieve unexpected effect.

3. Bearings can not be played in the water. If you find the speed decreases significantly after a period of time, it will be that dusts go into the bearing. Never mind, you can put the spinners into alcohol for 15 minutes. Then, No need to Rub, you can directly put caps to the spinners to spin.

 

Wish you enjoy it.