Do you know the second name for the trailer hitch balls?

Many friends are not familiar with the structure of the car are more likely to be confused with  how to make the correct use of the automobile accessories .They even don't know what the best use of them and what's the name of each small parts.As for me,When I heard the trailer hitch balls for the first time ,I didn't know it's equal to the car trailer jack ,Once I heard the name of the weld ball mount.Which is carried by the china car trailer jack .

As a matter of fact ,It has been widely used for many years in the European ,It;s not strange for the European ,Many car manufacturer in the European has already equipped  the trailer hitch balls supplierin case the car broke out in the way by accident .It’s convenient for you to drag your damaged car ,Which is also installed at the back of the car and also used for draging the room car,bicycles and so on.

Do you know the common standard for the weld ball mount?

1)The International European standard is the 50mm diameter of the china trailer hitch balls top.

2)The another International standard for American is 2 inchs ,which is equal to 50.8mm

3)In the domestic,It’s generally 2 inchs.

Do you know some high reputation china weld ball mount supplier?

So far,The weld ball mount according to the International standard for European has been the most professional china  trailer coupler manufacturer Wes Farley's in Germany with 50mm diameter,

Which is basically universal for the back of  bike carrier and the small trailers ,As well as the cars imported from European.