Earth Auger Adapter,Electric Drill to Ground Drill Conversion Head for Electric Drill to Earth Auger Connector Tool Round Shank 2 Pit 2 Slot - Amazon.com
Blue Diamond Auger Drive Adapters
Tool Tuff Auger Adapter - 2-9/16" Female Round to 2" Male Hex | ToolTuff Direct
Skid Steer Auger Adapter | Spartan Equipment
STIHL 1 In. Square Connection Auger Bit Adapter for BT 121/130 - Gillman Home Center