This part is used to connect the Bullet Mole to a jack hammer so that the jack hammer can drive the Bullet Mole. It basically has 2 holes in it. One
Jack Hammer Adapter
Best Best Pneumatic Jack Hammer - Shank Adapter – Gimarpol
Jackhammer Driving Kit (JDK) - OZCO Building Products
Jackhammer Air Hose - Rubber Pneumatic Hose Assembly for Jack
Shank Adapter Striking Bars for Extension Rod Drifter Rod and R32
T45-600 Shank Adapter, Strike Bar
Pneumatic Air Jack Hammer Heavy Duty Demolition Tested W/(4) Bits
T45-500 Shank Adapter, Strike Bar
Interstate Pneumatics CU-851 3/4 inch male NPT Straight Through Jack Hammer Coupler
T45-500 Shank Adapter, Striking Bar
Jackhammer Driving Kit (JDK) - OZCO Building Products
JET 4in. Open Handle Chipping Air Hammer, Hex Shank, 4in. Stroke