Mainly used with six-string electric, but also with six-string acoustic. High quality pick (as it should be for the price!) The pick is very grippy and stays where you place it even with intense picking. Although I am no shredder, I dont think I could pick particularly quickly with this pick as it has a very sharp point. However, that sharp point also means you can, relatively easily, get very expressive tones, by altering the angle of attack of the pick against the strings. I have rated the durability (you need to rate all categories to submit your review), but feel I cant make a fair comment on that as I have only played for about two hours with it so far! Having said that, the Switchblade does not appear to be worn at all after those two hours.