Product review (5 stars): Whirlpool W10712394 Adjuster KIT ..
Even though the pictures on the instruction sheet are not the best, I was able to get both sides changed.  I would suggest reading the instructions, which I tend to ignore.  It helped me to look at how the old unit was positioned.  No torx screwdriver was necessary as an adapter for use with a phillips screwdriver was in the package, and worked with no problem.  Hardest part was removing the old adjusters.  I agree with prior reviewer that manufacturer should furnish the part at no cost as it is obviously a defective part.