You need a 3/8 Allen Wrench
You need a 15 mm regular wrench.
Metric Allen wrench.
It will be a 14 or 17 mm wrench.
45t
use an Allen wrench not a socket or open or box wrench.
14 mm
3/8"
the caliper bracket bolts use 18 mm wrench on a 03 1/2 ton 4x4
it takes a 7mm Allen wrench to remove calipers on 2003 ford focus.
It should be a 3/8" Allen wrench.
Lug Wrench to remove tire & Wheel Socket Wrench or Hex Wrench to remove Caliper bolts Large "C" clamp to collapse caliper piston Rags, and a good spray brake cleaner
The T60 is the size needed to remove caliper bracket.