I just experienced my first injector razor shave tonight using the Parker Adjustable Injector razor and Taconic Shave injector razor blades. These blades, used with the Parker Adjustable Injector set at mid range aggressiveness (#3), allowed me to complete a 4 pass shave. I typically only manage a 3 pass shave before irritation, nicks, or razor burn appear. Today, using Taconic Shave injector blades, I accomplished a 4 pass shave (including against the grain) which I have never been able to perform using other combinations of razors and blades without irritation, nicks, or razor burn. I am very pleased with the combination of Taconic Shave Injector razor blades paired with the Parker Adjustable Injector razor. I can definately recommend Taconic Shave Injector Razor Blades paired with the Parker Adjustable Injector razor.