Extensions

Diamond Core Drill Bits Extensions Adapter: 

Shaft Extension for Core Drill, use with Diamond Core Drill Bits.

• High quality industrial grade hardened steel drill bits extension adapters.
• Enables the usage of core bits on different drills, including: 

                   5/8"-11 Female to 1 1/4"-7 Male threads

                   1 1/4"-7 Female to 5/8"-11 Male threads

    5/8"-11 male thread fits:                   

• Dry core bits;                                
• Wet core bits 1- 1/2" and below

    1-1/4"-7 male thread fits:

• Wet core bits 1-3/4" and above