Allen keys are hexagonal. The shape is a hexagon (6 sided figure).
Hexagon
a hexagon
hexagon
The hole that fits an Allen wrench is typically in the shape of a hexagon. This hexagonal recess allows for the six-sided profile of the Allen wrench to engage securely, providing the necessary grip for turning screws or bolts with hexagonal heads. The design ensures a snug fit and effective torque transfer.
If it stays on your face, it fits.
a hexagon
Hexagon
hexagon
Hexagon
The hole that fits an Allen wrench is typically in the shape of a hexagon. This hexagonal recess allows for the six-sided profile of the Allen wrench to engage securely, providing the necessary grip for turning screws or bolts with hexagonal heads. The design ensures a snug fit and effective torque transfer.
6-sided is hexagon
To fasten and unfasten Allen screws and bolts. These fasteners have a hexagonal slot in the top into which the Allen wrench or key fits.
To determine the size of the rounded Allen wrench needed for the task, measure the diameter of the screw head or the hole it fits into. Match this measurement to the corresponding Allen wrench size.
I believe that's a 5/16 Allen.
whatever one fits, some are torx..
this is my question, lol. my answer is 7 mm Allen wrench. fits like a glove!
I believe that would be a 3/8 Allen wrench. -Very common on Dodge /Plym brakes.