Guys
I hate to admit this but .....
Last Sunday I was putting new rotors & pads on the rear axle of my 2000 3/4 Ton HD 4x4 Suburban. The truck has 140K mikes, and the rotors were very thin.
As you can imagine, the caliper scew pins were TIGHT. I tried my US made 3/8" socket/T55 bit - SNAP!
My oldest said that he had a 1/2" drive impact Torx set - I asked him to get it out. I was a little worried when I saw that the set was Pittsburgh brand - as in HF.
The pins were a bit bunged up, so I started the Torx into the pin and used a hammer

shocking: That's right!

) to set the Torx impact in place. Add my 18" Craftsman 1/2" breaker bar, and out they came (all 4) - no issues, no broken bit!
I bought a set of the 1/2" impact Torx bits today at HF - $32 with the 20% off coupon.
I like the thought of a solid 1/2" drive bit over the 3/8" socket & bit approach.
I may have been lucky, but my son told me that he bought the set after a buddy that is a truck mechanic recommended them to him (after he broke two 3/8" socket bits trying to change his brakes on his 3/4T HD Chevy 4x4.