Over 90 days have passed since I placed my order for these, and in this time I have switched between several different razors and only used two of the blades from this box. At first I thought it was a fluke, but now I know: the blades I purchased from seller bsd sales are counterfeit. These blades would not stay on either of my Venus razors - the friction from drawing it up my leg was enough to pop it off several times over the course of one shave. They also did not fit correctly into the plastic they come in; I had to pull the blade out with my fingers instead of pulling it out by the handle like you're supposed to be able to do. Finally, they were so dull that they didn't take hardly any hair off of my legs. I've been using Venus razors for several years now, and I know how sharp they're supposed to be out of the box.
In conclusion, be careful what you buy. I know this single one star rating won't hurt the popularity of these razors, and it shouldn't as they are great razors. But do be careful who you're buying from, because you never know what you'll get.
(I was unable to give bsd sales a review due to it being more than 90 days since the purchase, but please steer clear of this seller!)