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. 4 gears, 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 Specification: Package Weight One Package Weight 0.08kgs / 0.19lb One Package Size 10cm * 10cm * 4cm / 3.94inch * 3.94inch…