Shank plate for digger derrick auger.
This part bolts to the auger and holds the teeth so some people may call this the tooth holder.
If you have not changed your teeth in time and wore out the auger where the teeth mount this is what you need to fix the auger.
Comes with bolts and nut to attach it to the augers boring head.
Takes 2 per auger and will fit almost any brand dirt auger with tx series teeth.