if it is the same as the 2004 then you would be looking for a 14mm or a 9/16 size
the caliper bolts require a 3/8" Allen wrench. You can buy these as a socket at just about any parts store.
It takes a T55 Torx bit on the front calipers.
Metric Allen wrench.
You need a 15 mm regular wrench.
It will be a 14 or 17 mm wrench.
Try 3/8 Allen key , or 15 mm wrench.
45t
use an Allen wrench not a socket or open or box wrench.
14 mm
3/8"
You need a 3/8 Allen Wrench
the caliper bracket bolts use 18 mm wrench on a 03 1/2 ton 4x4