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. 9 gears, 10 bearings, idling for 2 minutes, super mechanical sense6. Silent steel ball bearing, each gear has a separate bearing, one can drive multiple rotations7. Material: metal8. Function: decompression9. Dimensions: 62 x 62 x 20mm Specification: Package Weight One Package Weight 0.05kgs / 0.12lb One Package Size 10cm * 10cm * 4cm / 3.94inch *…