1. Description:
Auto-Rotation system: 
- High quality Oneway Bearing. 
- Precision CNC Aluminum Hub and Stainless Steel Sleeve. 
- CNC Delrin 78T 0.3M Main Gear. 
- CNC Solid Carbon Main Shaft.
- Optimized for weight and durability.
 2. Usage:
- Use for Trex 150 DFC.
 3. Weight:
- CNC Oneway Main Gear w/Solid Carbon Main Shaft Set: 2.97(g) = 0.095(oz).
 4. Included: 
- CNC Oneway Main Gear w/Solid Carbon Main Shaft (1set).
 * Hardware: 
- (SKU: M1x2PH-10) M1x2mm Pan Head Screw (5pcs).