Extensions

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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 adap ters. 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 Show more