Three Gear Linkage Pure Copper Fidget Spinner Decompression Toy, Colour:Black

1. Gear: made of pure brass, imported from Germany with high-precision lathes2. Exquisite grinding, no burrs, no hand, smooth rotation3. Main body: aviation aluminum material, sandblasting effect, anodizing treatment, frosted feel4. Bearing: imported stainless steel R188 type bearing, good wear resistance, long idling time5. 3 gears, idling for 1 minute, super mechanical sense6. Silent steel ball bearing, each gear has a separate bearing, one can drive multiple rotations7. Upgraded model: a full set of detachable, reconfigurable, super mechanical sense8. Function: decompression9. Material: metal