Quick Brake Change Tool Question

[mmbirtcher]

I was about to change my front brakes when I got to the calipers and discovered that none of my flat wrenches were actually skinny enough to get on the inner part of the nut. I want successful tracking down a skinny wrench (15mm?) at Lowes either. All my wrenches are Craftsman. Any specific brand / model suggestions so I can get a wrench skinny enough?

also, the 12 point to remove the caliper is 21mm, correct?

 

[Rover Range]

Caliper slide pin can be either 15mm or 17mm.
A pair of channel locks will work too.
Caliper bracket bolts is 21mm 12 point.

 

[ktm525]

I have used a set of needle nose vice grips for the past 14 years.

 

[djkaosone]

I have this thin wrench set and it's served me well in different applications. It's also one of the better chrome reinforced wrenches that I keep in the truck all the time.

https://a.co/d/fGvF3lG

 

[txfromwi]

My small (5"?) Crescent wrench just barely fits..