RC4 auger bits are available with a range of different teeth options to suit most ground conditions including earth, hard soils, shale, clay, and permafrost.

Basically, with the RC4, you get all the benefits of the A4 plus the superior penetrating ability of the B7 taper tooth head. The RC4 comes complete with all purpose taper teeth perfect for combination drilling in all conditions - from earth to medium rock, providing a clean hole every time.

RC4 teeth are easy to install and remove with Digga's ingenious knock in, knock out tooth locking system which eliminates the need to use extra tools to remove the teeth.

RC4 Auger Bit Specs
Drilling Conditions General
Hub 2" Hex
Optional Hub N/A
Overall Length 48"
Pipe 2.375" - 4.5"
Flights (Lead) 5/16"
Flights (Carry) 5/16"
Teeth TTD / TTS
Pilot PM-HX-3
Max Size 48"
Ideal Drives 1MDS-4DSS
Optimum Drilling Speeds
Earth 55-65
Clay 45-55
Shale (Fracturable Rock) 20-45
Heavy Rock N/A
Auger Features Double start, single carry flight configuration. Shallow Flight pitch for greater soil retention. Heavy duty auger body, for greater wear & performance