I recently ordered some extra bars from Jes Extender for my SizeGenetics device. Sadly, I never received them as they were seized by US Customs and Border Protection. I got a rather long letter stating that the bars are a Class III medical device and do not have in effect an approved application. There were several other reasons listed for the seizure. I thought others should know this in case they are considering ordering spare rods from Jes Extender.