Allied Piercing Tools
PNEUMATIC PIERCING TOOLS
Allied Piercing Tools
Allied Construction Products, LLC pioneered and developed the concept of pneumatic underground piercing tools more than 40 years ago. For over 40 years, Allied pneumatic piercing tools have been performing horizontal bores beneath highways, railways, and driveways. Offering an economical method for boring up to 70 feet, Allied is used in all types of utility construction, including residential plumbing applications.
Hole Hog® Specifications
Standard Models

Model | Outside Diameter (in.) | Length (in) | Weight (lbs) | Working Air Pressure (psi) | Air Consumption (cfm) | Percussion Rate Per Minute | Whip Hose Inside Diameter (in.) | Reverse Type Pairs |
---|---|---|---|---|---|---|---|---|
HH-46 | 1.83 | 37 | 20 | 110 | 10 | 625 | 1/2 | Quarter- Turn |
HH-57 | 2.25 | 40 | 31 | 110 | 20 | 585 | 1/2 | Quarter- Turn |
HH-68 / HH-68(TH)** | 2.63 | 50/53 | 53/56 | 110 | 32 | 480 | 1/2 | Quarter- Turn |
HH-79 / HH-79(TH)** | 3.10 | 55/58 | 75/80 | 110 | 45 | 440 | 3/4 | Quarter- Turn |
2100C (TH)** | 3.88 | 62 | 125 | 95 | 60 | 400 | 1 | Quarter- Turn |
HH-108 / HH-108(TH)** | 4.25 | 67/70 | 164/175 | 110 | 120 | 400 | 1 | Quarter- Turn |
2501C (TH)** | 4.06 | 62 | 140 | 95 | 60 | 400 | 1 | Quarter- Turn |
3000C (TH)** | 5.13 | 63 | 195 | 90 | 140 | 400 | 1 | Quarter- Turn |
4000 | 6.00 | 68 | 282 | 90 | 240 | 400 | 1 1/2 | Standard |