I'm surprised you haven'y read my posts on several sites, LPSG - Major Girth Gain Solution
constriction using an adjustable collar or a clamp coupled with engorgement by forcing blood into the penis from below the constriction point causes the penis to balloon to incredible hardness - shiny glossy glans
do that as often as you can and for as long as you can stand, not to exceed 15 minutes at a time, and you will grow quickly
I also pump to extreme pressures, up to -25 Hg, which would destroy an unconditioned penis for brief intervals, like a minute at a time
my starting girth was a straight 4.5, my wife used to ask if I was in
last year I was a steady 6.0 mid girth, currently a steady 7.0, and get to 8.5 mid girth after a chem PE session followed by constriction and pumping
I'm shooting for the moon girthwise - over 8.5 base girth now
simply google - major girth gain solution
P.S.
I have broken 3 cable clamps simply by milking blood from below the clamp during constriction, the internal pressure pops the sprockets