Expander Set for Open Head Drill Bitsis required to connect a ConcreteorAsphaltOpen-Head Core Drill Bits to an electric or gasoline-poweredCore Drilling Machine. The Expander Set fits into the open end of Open-Head Coring Bits and threads onto core drills. The Expander Set can be reused multiple times as coring bits wear out.

Features:

• Connects Open-Head Coring Bits for asphalt or concrete to a Core Drilling Machine
• Can be reused indefinitely as core bits wear out
• Available in sizes to fit Open-Head Bits

MeetsTest Methods:
AASHTO T 24
ASTM C 42