20mm diameter is to remove the size of the pastic Ring
On the atomization of the film 2 wires, because the batch is not the same, sometimes red and black, sometimes yellow and blue, the other does not affect the use
Size for manual measurement, there may be a 0 to 2 cm error, belongs to the normal phenomenon.
And due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!
