Labbed = Blade dimension's all the same, shape, thickness, dia. Ballanced, runout on hub checked to very tight tollerances.
Merc labbed props have a satin finish instead of polished, the ones I have or have run have are noticably smoother, and better top end and accelleration.
They do cost $$$ but I feel they are worth it, last LAB ET I bought think list was around $1400.00. If you like to hit bottom or run in water with junk in it they probably not for you, they tend to have thinner blades and will not take a hit like std prop.
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