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. 9 gears, 10 bearings, idling for 2 minutes, super mechanical sense 6. Silent steel ball bearing, each gear has a separate bearing, one can drive multiple rotations 7. Material: metal 8. Function: decompression 9. Dimensions: 62 x 62 x 20mm
