They have stainless steel races outer case and inner ring and ball bearings made from silicon nitride noted as si3n4 or zirconium dioxide noted as zro2.
Best ceramic bearing metal fidget spinner.
It gives you a long spin time and more balance.
The r188 hybrid ceramic ball bearings are the perfect high speed replacement bearing for your do it yourself fidget spinner.
Hybrid ceramic bearings are the best choice for fidget spinners.
Black balls are the preferred choice for fidget spinners since they give the best spin times.
This is the best fidget spinner bearings you can get.
There will be no smell on your hands like from those made from copper and brass.
Hybrid ceramic ball bearings are more expensive than steel.
Premium metal fidget spinner best metal fidget spinner with stainless steel and precision bearing the premium fidget hand spinner is a tri bar spinner mading with cnc milled stainless steel.
Scione fidget spinner metal 5 pack stainless steel bearing 3 5 min high speed stress relief spin adhd anxiety toys for adult kid autism fidgets best edc hand spinners finger toy focus fidgeting 4 4 out of 5 stars 349.