I need to get some realy good Mulching Blades for the small yard mowers that I have. Well, the only ones I have at current.<p>Can anyone help me out on this. I would like some proven aftermarket type. I have heard of Nija Blades but know nothing about them.<p> I checked out the Gator Blades but they are for combination blade machines. I am still in the small, single blade catagory.<p>Thanks in advance.