I thought I would share my opinion on these new blades. I have them installed on my 40" Toro T2 and I have to say I like them. They dont replace a mulching system with baffles, but they allow the grass to be cut finer and makes it easier to fall to the roots instead of sitting on the top of the lawn. I may still have to go over a few places with the mower or my blower (Especially the edges of driveways or gardens). On my rear fescue lawn the standard blades would toss out clumps every few feet, either when hitting a bump, or over an area with little or no grass. I can now cut this same lawn with Atomic blades and clippings are reduced to a fine mulch. I am going to try installing a chute blocker and give this a try in hopes that it wont leave a a pile of clippings on the right side of the mower. Over all I am happy to have purchased them.