This probably the best product of this type for the money. The gauge is invaluable to monitor ones usage so as not to cause damage and to slowly increase pull over months and years. If ones starts at a low HG vacuum pressure and builds up over a long time and backs off if one develops blood blisters or problems and recoups for a week or more, this can be used for general permanent lengthening. 20 minutes a day. After 4 years of trying on and off with several different techniques I like this one. I'm up to 10 HG which would seriously damage a newbie but over time I've built up tolerance like any other stretching or hard to do physical endurance activity. Only a fool goes too fast.
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