egg beater cleats are made of brass which is softer than the pedals so the cleats wear preferentially rather than the pedals- they seem to be a lot softer than SPD cleats- I used egg beaters on a single mountain bike ride (with some carrying sections) and they looked a like something that fell to earth in a meteorite.
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only the dead have seen the end of mass motorized stupidity
Plato
(well if he was alive today he would have written it)