just for those that dont know these are not torx head don't use a torx bit. You need a tri square Read the wiki for covkids rant on hex bolts'Torqx' type

Surprised they sell them tbh, either way don't skimp on the hex key/splined bit for this job, get the best quality socket for your torque wrench I found 3/8 socket is better than 1/2 as the boot gets in the way and prevents you getting square with the bolt an the larger 1/2" head.