been hearing so much about Feather blades, so i finally bought a pack and tried them out yesterday. Decided to cork it, since i read that gives a smoother shave. put the blade in my Fatboy, dialed it down to 3 (usually use 5-7 with Astra SP blades). Did a three pass shave (WTG, ATG, ATG) with very good results. no nicks or irritation, not that i have had any the past 4 weeks. overall i must say i did not notice a difference between this blade and my Astras. Hopefully i can get 4-5 shaves from the Feather, i usually only get 2 with my Astra.