I'm still going with 573 being an aerator, as a de-thatcher is designed
to
vigorously rake the lawn to break up the thatch.

Doesn't an aerator generally have hollow teeth?

scott



There are plenty of the star wheel and spike types to be found on the web,
but I do remember golf courses using the hollow ones that leave big holes, I
always disliked paying to play on a course that had just been aerated.


Rob