The PowerHanger's plates are designed for
weight or some form of elastic line, such as yoga tubing or elastic strips.
As for blood cutting off, it depends on your wrapping. If you wrap tightly, the maximum time is 10 minutes. If you wrap loosely, your maximum time is 30 minutes. The wrapping should be comfortable at your level of penile shaft and glans conditioning. There are many posts for wrapping methods, and each method allows the time to be shorten or lengthen within the plates.