Part location: Center of wheel
This product includes :
3x3.5mm Stainless Steel Countersink Washer 4pcs
Stainless Steel Flat Head Screw 3x12 4pcs
Major advantages of upgrading to this part/product:
1. The original wheel hub diameter is 3.5mm. There will be gap if install with original 3mm screws. This product can fit better.
2. Original installation is to fix directly by screws, this product has upgraded to fixing by countersink washer and screws. This can stabilize the wheel better.