Vistek Medical in Ivyland PA sells the worst quality medical parts I have ever seen. Not only did Vistek Medical ship me less parts than I ordered, but they sold me defective parts and then took forever to give me a refund. This is just my opinion, but arenít medical implants supposed to be accurate? And yet they acted like they didnít even care. When I tried calling them, their manager never even returned my call. I have been in the medical industry for years. For me, Vistek Medical stands for nothing but poor quality parts and ill-mannered managers who donít have the decency to do their job. They rave precision and yet their medical implant parts need to be returned. Doesnít ISO certification mean anything any more? Forget about getting a refund anytime soon.