The product includes :
CVD-2pcs
Screw Pin M4x2.5x12-2pcs
4x2.5 Silicone O-Ring-2pcs
Product major function & usage:
Transferring the power and leading the drive of this wheels
1. Created using a harden steel 45# coupled with aluminum 6061 T6 human anatomy which can be sturdy and lightweight.
2. CVD design for smooth rotation.
3. Retractable design provides more space while the rocker swings better.