It takes a FA12A Allen wrench.
the caliper bracket bolts use 18 mm wrench on a 03 1/2 ton 4x4
You need a 3/8 Allen key.
3/8
The Allen wrench size for the front caliper slide pin bolts is 3/8".
A 3/8 Allen key.
Metric Allen wrench.
You need a 15 mm regular wrench.
It will be a 14 or 17 mm wrench.
10mm or 3/8
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
You need a 3/8" Allen wrench to remove them.
9mm Allen wrench