left in the hole bit

What are Leave in the Hole bits used for ?

Leave in the Hole bits are used for foundations, pilings, and anchor type systems where the bit is left in the hole and not retrieved.

BestDrillingBits.com offers New Leave in the Hole Bits.

These bits have been specifically made for leave in the hole applications. They are unthreaded, which makes them less expensive and easier to weld to.

These ARE NOT RE-RUN or REBUILT bits !!!

6" left in the hole steel tooth tricone
6″ left in the hole steel tooth tricone