okay double adjuster is what we will call it even thou you only adjust one end, the end that go's in the LCA do's not adjust it tighten's up against the arm and that hex head in the center is not a shoulder. a shoulder is that smooth part right under the head of a bolt that has no threads. QA1 is what i have and i'm saying it just don't seem right putting a 9/16 threaded bolt in a 5/8ths hole where a 5/8ths shouldered factory strut end came out of. tomorrow i'm going to call QA1 and ask. i agree it probably won't hurt anything but it isn't right. QA1 charges very well for there products i expect a well made product
