An auger may also be used in agriculture or animal farming for digging
post holes. Such an auger is called an earth auger, soil auger, or post hole
digger. This kind of auger can be a manually turned, handheld device, or powered
by an electric motor or internal-combustion engine, possibly attached to a
tractor (being provided with power by the tractor engine's power
Seymour® S500 Industrial™ Iwan Auger, 2" Point Spread, Steel Blades Riveted to Steel Yoke, Hardwood Replaceable Handle
Lawn auger are general purpose design for use in a variety of soils. Steel blades are riveted to tough malleable iron yoke. Steel shaft with a welded steel tee handle. Available in 2, 3, 4, 6, 8, 10 and 12inch heads.
The AU-S line. has the following pipe sizes:
AU-S2 extender uses a 1/2in threaded pipe.
AU-S4, AU-S6, AU-S8 and AU-S10 uses 3/4in threaded pipe.
AU-S12 uses 1in threaded pipe.
No extenders are stocked because it is so much cheaper to just go to the local hardware store and buy the correct size pipe pre-threaded. You would also need a female to female threaded adapter to connect the extension to the T-handle.