I like this product a lot, and after purchasing one, decided I wanted another, so purchased a second. The spread on the whiskers for the two varied significantly in spread(one inch vs two and a half inches), and I contacted customer support on this deviation. I wanted a consistent spread to the whiskers, since the effect of whiskers at a one inch spread and two and a half inch spread is significant (for nipple play for example). Below is the response:
"Unfortunatly as the whisker has already been opened we would be unable to accept it as a return. Regarding the whiskers due to variations in the design there would be no guarantee of both being identical".
So while I can endorse the quality of this product, expect inconsistent spread in the whiskers and an inconsistent experience of the product. If you buy just one this inconsistency probably won't matter. If buying two, think twice about the application. Of the many quality product offered, this is the only one I have a problem with. May want to consider making your own given that it's just a plastic covered metal tube with metal whiskers crimped at one end. I agree that exact spreads are impossible, but being in the same ball park of whisker spread would be nice.