DHS Equipment is your best supplier for this 12 point flat tip steel cutter for the EDCO CPM-8 and CPM-10 (6 shaft) scarifiers. The dimensions for this scarifier cutter are 2" OD x 5/8" ID x 3/16" thick.
This EDCO CPM-8 12 pt cutter is a superior quality OEM part! Part number 20206, CP305.