Depends on size of wrench.
The one that fits tightly in the Allen socket. -Any real artisan or mechanic has a set of SAE and a set of Metric Allen keys.
No. it's determined by the distance over the opposing flats of the bolt head.
Usually a 1/8 Allen key
Type and year of car would help.
It is not Allen . It is a 14 mm open wrench
It takes a 7mm allen wrench.
Most likely for this type of van is a 3/8 Allen wrench.
You need a torx type socket. If you use an Allen wrench...you will strip out the inside of the bolt.
7 mm Allen wrench
It's either a 12 or 15mm bolt, not Allen key.
A 3/8" Allen wrench will remove that bolt on the front caliper.
It takes a 3/8" allen wrench to r & r that caliper bolt.
I believe that is a 3/8 Allen key.
7mm Allen wrench
A 1 1/4" wrench will fit a bolt of the same size .
Depends on size of wrench.