You need this if you are removing Mercedes fuel tank sending unit
I used this wrench to remove Mercedes fuel tank sender unit , it can also be used to removeg fuel tank strainer , they both require 46mm .
It's 46mm with 3/8 drive unlike others which requires 1/2 ,3/4 or 1" drive. Excellent product and price.
I got it in 10 days from England to California .