This part is used to connect the Bullet Mole's impact cap to a jack hammer. It basically has 2 sizes of holes inside of the adapter. One for an SDS Max. and one for a 1-1/8" Hex shank. Simply slide the large end of the jack hammer adapter over the impact cap then insert the sawed off blunted steel bit from either an SDS max or a 1-1/8" hex bit. Eeither an electric or pneumatic jack hammer may be used.
NOTE: An Idea is to use an old steel bit and cut off the tip so that it will be blunt.
This is used to support the shafts and hold them up off of the ground...