You are buying a brand new set of Engine Tech head bolts that are made in the USA. They fit the following.

Chrysler / Jeep 5.7L / 345 OHV V8 16V "2,H,T" Hemi 3.917" Bore 05-15

Chrysler / Jeep 6.1L / 370 OHV V8 16V "3,W" Hemi 4.055" Bore 05-10

Chrysler 6.4L / 392 OHV V8 16V "J " 103.90MM 2011 - 2015

Any questions feel free to ask