The Auger Bit Repair Hub will make your Post Hole Digging Auger stronger and sturdier. You will no longer need to worry about bending or bowing under pressure because our repair hub is made from the most tenacious materials available. It is constructed from cast alloy, so it is sure to last a good long time. Typically, a hex hub wears along the straight line when it fails. Our repair hub's ergonomic design reduces the stresses that occur during drilling. This, in turn, allows for an overall stronger drive. This repair hub is a 2" female hex. It can be welded to any standard auger bit and is compatible with any 2" hex drive shaft with 3/4" or 5/8" pin holes.