We have a variety of blades and spacings available.
PLEASE NOTE- if your mower is Pre 2000 (or you are unsure, please let us know as the bottom blade replacement will need to be a different style. 
 
We recommend 12mm spacings for couch and couch varieties and 20mm spacings for buffalo, kykuku and other broadleaf varieties.
We also recomend grooming over verticutting. However verticutting will still be beneficial as long as you dont go too deep and don't push the mower too hard. 
For any other question please email linc@tridentlawnmowers.com.