These images show the Tana Counter Door Knives for the 220 and the 440 Shredders.
The short ones are located at the ends with 22 of the standard ones in between. These knives are cut straight from 50mm wear plate and as a result retain a sharp edge, compared to the same part made by casting or forging.
Rotor Saddle. This weld on saddle receives the hammer with the corresponding bolt hole. Tana 220D Tana 440D