Here is a picture of the blades that I have tried for my 60" Lazer. They are numbered in order of their cut quality with 1] being the best. 1] Modified cutting edge OEM #613250 solid foil high lift. (very sharp) 2] Same as above but with "as purchased" cutting edge (pretty dull) 3] Modified cutting edge OEM #633483 notched foil high lift. (very sharp) 4] Same as above but with "as purchased" cutting edge. (pretty dull) 5] Aftermarket mail order (dont remember where) notched foil (notice smaller width lift foil) 6] Gator type with outside flow shredding tips. 7] Regular Gator that has inside flow shredding tips. 8] OEM # 613112 factory mulching blade. I use 6,7,and 8 combined in various ways in the fall for leaf mulching.