Blades Exmark turf tracer 36inch blades

Joined
Oct 29, 2013
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9
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It's time for a new set of blades on my turf tracer and after looking at blades what's the difference between a solid hi-lift blade or a notched air-lift blade I don't have a clue what the difference is other than the one blade has two notches one on each side and the solid hi-lift blade does not what difference does it make in the cut?
 
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