Male Power Pro in erect length when 15 subjects used low level penile traction over a 6 month period. An earlier study conducted in 2001 employing higher levels of traction reported even greater gains. Over just a 17 week period, 50 test subjects achieved erect length gains of Male Power Pro between 1.14 and 2.27 inches. So if you are looking to add an inch or so, a penis traction device can certainly do the job. Whilst the sales pitches for penis pills and patches may guarantee to increase…