Position and Number of Valve Holes on Steel wheel

Two Types for Valves Position and Numbers of Steel Wheel Rims:

1. There is only one valve: on the right or left side of the spoke.

2. Two valves: one on the right side of the spoke and the other on the right side of the spoke. Alternatively, both valves are located on the right side of the spoke.
Note: The advantage of two valves is fast inflation speed.