Exclusive Oregon Fitz-All center hole fits 95% of all lawnmowers made. Each blade requires an adapter (see Oregon adapter kit
02-034) unless being used to replace an MTD blade with the “bow tie” (rectangular) center hole such as 742-0740, 742-0640, 742-0741,
742-0642, 742-0742, etc.
MANUFACTURERS NAME:OREGON MANUFACTURER PART NO:90-511