A diamond drill bit

Bit

A diamond drill bit

A Little Champion Rock Drill

Drill

A Little Champion Rock Drill

A Little Champion Rock Drill

Drill

A Little Champion Rock Drill

A drill bit for boring

Drill Bit

A drill bit for boring

A kind free-falling tool

Free-Falling

A kind free-falling tool

A core lifter and barrel

Lifter

A core lifter and barrel

A sliding link for boring machines

Link

A sliding link for boring machines

A sliding link for boring machines

Link

A sliding link for boring machines

A pod auger for boring

Pod Auger

A pod auger for boring

A pod auger for boring

Pod Auger

A pod auger for boring

A rod joint for boring

Rod Joint

A rod joint for boring

A temper screw

Screw

A temper screw