Auger Comparison, Use, And Attachment Information
Types of Augers
Standard Augers
Standard augers are great for most jobs. Typically, Standard augers are used for projects involving softer soils; however, with various tips and blades, standard augers can be used in tougher soils, from clay to compact soils and even frozen ground. Standard Snap-On augers are available in lengths of 36” (30” hole depth) and 42” (36” hole depth) with extensions available.
Heavy-Duty Augers
Heavy-duty augers are recommended for rocky soil but can also be used on hardpan or frozen soils. These augers will operate better at slower RPM speeds and should be used at 20:1 or 13:1 gear ratio. Heavy-duty augers are equipped with tooth and side cutting blades and take standard bolt-on points or carbide tip points. Also available in lengths of 36” (30” hole depth) and 42” (36” hole depth) with extensions available.
Pengo-Style Augers
Pengo augers are specifically for rocky or abrasive soils and have a unique rubber lock feature for replaceable cutting blades. Pengo augers only take Pengo-style points, blades, and carbide blades. Point and blade size must correspond with diameter size, and Pengo-style augers require rubber locks for blades. Standard snap-on extensions are available.
Hex Augers and D-Series Augers
Smaller augers between 1” and 3” in diameter are too small to be designed with a snap-on connector. Thus, hex augers come with a snap-on hex adaptor, connecting the auger to the drill with the snap button connection. Hex augers take unique hex points and hex carbide blades with an adaptor. These are used mainly for soil sampling. D-Series augers connect to some earth drills to provide an alternative to snap-on augers. D-Series takes standard points, carbide blades, and heavy-duty teeth. Each must correspond to its diameter size.
*Standard, Heavy-Duty, and Pengo-Style augers are available as snap-on augers. Hex and D-Series augers require adaptors to connect to the drill and to points and blades.
What Type of Auger, Point, and Blade Should You Use?
Soil Type: Applicable Points and Blades
| Soil Type |
Auger |
Point |
Blade |
| Clay/ Dirt *Down to 6” |
Standard, Hex, D-Series |
Standard Point |
Standard Dirt Blade |
| Abrasive Soils/ Impact *Down to 24” |
Standard, Heavy Duty, Pengo |
Carbide Tip Point |
Hardfaced Blade, Carbide Insert Blade, Chisel Point w/ Carbide Blade |
| Loose Rock/ Compacted Soil *Down to 36” |
Standard, Heavy Duty, Pengo |
Carbide Tip Point |
Chisel Point Blade |
| Compact Rock *Down to 42” |
Standard, Heavy Duty, Pengo |
Carbide Tip Point |
Chisel Point w/ Carbide Blade |
| Hard Pan/ Frozen Soil *Down to 48” |
Standard, Heavy Duty |
Carbide Tip Point |
Carbide Tip Blade |
What Point and Blade Should I Use With My Auger?
Standard Auger: Diameter and Applicable Points and Blades
| Diameter |
Standard Point |
Carbide Tip Point |
Standard Blade |
Carbide Blade |
| 1.5" |
1.5” *Screw-On Only |
n/a |
n/a |
1.5” *Screw-On or Bolt-On |
| 2” |
2” *Screw-On Only |
n/a |
n/a |
2” *Screw-On or Bolt-On |
| 3" |
3” *Screw-On Only |
n/a |
n/a |
3” *Screw-On or Bolt-On |
| 4" |
Point for 4”-12” *Bolt-On |
n/a |
4” *Bolt-On |
4” *Bolt-On |
| 5" |
Point for 4”-12” *Bolt-On |
n/a |
5” *Bolt-On |
5” *Bolt-On |
| 6" |
Point for 4”-12” *Bolt-On |
6” *Bolt-On |
6” *Bolt-On |
6” *Bolt-On |
| 7" |
Point for 4”-12” *Bolt-On |
7” *Bolt-On |
7” *Bolt-On |
7” *Bolt-On |
| 8" |
Point for 4”-12” *Bolt-On |
8” *Bolt-On |
8” *Bolt-On |
8” *Bolt-On |
| 9" |
Point for 4”-12” *Bolt-On |
9” *Bolt-On |
9” *Bolt-On |
9” *Bolt-On |
| 10" |
Point for 4”-12” *Bolt-On |
10” *Bolt-On |
10” *Bolt-On |
10” *Bolt-On |
| 12" |
Point for 4”-12” *Bolt-On |
12” *Bolt-On |
12” *Bolt-On |
12” *Bolt-On |
| 14" |
Point for 14”-16” *Bolt-On |
14” *Bolt-On |
14” *Bolt-On |
14” *Bolt-On |
| 16" |
Point for 14”-16” *Bolt-On |
16” *Bolt-On |
16” *Bolt-On |
16” *Bolt-On |
Heavy Duty Auger: Diameter and Applicable Points and Blades
| Diameter |
Standard Point |
Carbide Blade OR Tip Point |
| 6" |
Point for 4”-12” *Bolt-On |
6” *Bolt-On |
| 7" |
Point for 4”-12” *Bolt-On |
7” *Bolt-On |
| 8" |
Point for 4”-12” *Bolt-On |
8” *Bolt-On |
| 9" |
Point for 4”-12” *Bolt-On |
9” *Bolt-On |
| 10" |
Point for 4”-12” *Bolt-On |
10” *Bolt-On |
| 12" |
Point for 4”-12” *Bolt-On |
12” *Bolt-On |
| 14" |
Point for 14”-16” *Bolt-On |
14” *Bolt-On |
| 16" |
Point for 14”-16” *Bolt-On |
16” *Bolt-On |
Pengo-Style Auger: Diameter and Applicable Points and Blades
| Diameter |
Pengo-Stye Point |
Pengo-Stye Tooth Blade w/ Rubber Lock |
Carbide Blade OR Tip Point |
| 6" |
6” *Bolt-On |
One Size Fits All *Drive-In |
6” *Bolt-On |
| 7" |
7” *Bolt-On |
One Size Fits All *Drive-In |
7” *Bolt-On |
| 8" |
8” *Bolt-On |
One Size Fits All *Drive-In |
8” *Bolt-On |
| 9" |
9” *Bolt-On |
One Size Fits All *Drive-In |
9” *Bolt-On |
| 10" |
10” *Bolt-On |
One Size Fits All *Drive-In |
10” *Bolt-On |
| 12" |
12” *Bolt-On |
One Size Fits All *Drive-In |
12” *Bolt-On |
| 14" |
14” *Bolt-On |
One Size Fits All *Drive-In |
14” *Bolt-On |
| 16" |
16” *Bolt-On |
One Size Fits All *Drive-In |
16” *Bolt-On |
Hex Auger: Diameter and Applicable Points and Blades
| Diameter |
Hex Point |
Hex Carbide Blade |
| 1.5” |
1.5” *Steel Locking Pin |
2” *Bolt-On |
| 2” |
2” *Steel Locking Pin |
2.5” *Bolt-On |
| 3” |
3” *Steel Locking Pin |
3.5” *Bolt-On |
D-Series Auger: Diameter and Applicable Points and Blades
| Diameter |
Standard Point |
Carbide Blade |
Tooth Blade |
| 1.5” |
1.5” *Screw-On Only |
1.5” *Screw-On or Bolt-On |
One Size Fits All *Drive-In |
| 2” |
2” *Screw-On Only |
2” *Screw-On or Bolt-On |
One Size Fits All *Drive-In |
| 3” |
3” *Screw-On Only |
3” *Screw-On or Bolt-On |
One Size Fits All *Drive-In |
