Amazon two sided razor (shaving) replacment blades. I had them all taken away and haven't got the same kind back but look through the reivews and you can get some nice razors. I bought some for maybe $15 (including shipping) and got 100 blades. They were great. Easily got styros and could've got beans (cut to the fat, aka beans cause it looks like yellow gross beans). Any replacment blade you can get will work well. (The single blades, not the whole razor head refiller with small slim, flimsy blades inside).