the Q Box is an unbelievably low-priced addition to a PR5 and is one of the things that makes the PR6 better than the PR5, i.e., adding the Q Box to the PR5 largely bridges the gap between the 2 models. the low price is my read if what i'm seeing from
trisports.com is real, that is, only $65.
it needs to come WITH THE SLIDER when you buy it. the slider attaches with 3M 2-sided tape, but better yet if with epoxy, like 3M epoxy, or some other ridiculously strong epoxy (i have good luck with simpson strong tie).
Dan Empfield
aka Slowman