If you need to replace the cutter yoke due to wear, make sure you check all the linkages to the solenoid.
If you're looking for just the B500-021-01, give us a call to check for availability. For both the upper and lower blades, use part number B500-031-K for the shear kit.
We offer service at our Loganville location. Call for details: (770) 554-1187