1. Gear: made of pure brass, imported from Germany with high-precision lathes
2. Exquisite grinding, no burrs, no hand, smooth rotation
3. Main body: aviation aluminum material, sandblasting effect, anodizing treatment, frosted feel
4. Bearing: imported stainless steel R188 type bearing, good wear resistance, long idling time
5. 4 gears, super mechanical sense
6. Silent steel ball bearing, each gear has a separate bearing, one can drive multiple rotations
7. Upgraded model: a full set of detachable, reconfigurable, super mechanical sense
8. Function: Decompression
9. Material: metal