New Old Stock Notched Disc Harrow Blade.
Disc blade is 24" inches in diameter.
Concavity (depth of the curvature of the blade) is 3-3/4" inches.
Square center mounting hole.
The center axle shaft hole is 1-1/4" inch square.
Replacement aftermarket disk blade part number 2172.
These disk are new old stock from a dealership liquidation and will have some rust due to prior storage and age.