"JIU" hand spinner

A hand spinner. Work with bearing R188:6.35x12.7x4.76mm.
IF made by plastic, choose "xxx-plastic.stl" or "3ball.stl" .
IF made by metal (SLM/SLS), choose "metal.stl" .
Non-glue design.
3ball.stl can fit with 3 steel-ball diametered 8mm.

"JIU"in chinese means twist.