2 Pack! Shaft Adapter for Core Drill, 1 1/4"-7 Female to 5/8"-11 Male, for Use with Diamond Core Bits.

  1. Shaft Adapter, 1 1/4"-7 Female to 5/8"-11 Male
  2. Core bit thread: 5/8"-11 male
  3. 5/8"-11 male thread fit: dry core bits, and wet core bits of 1-1/2" and below.
  4. Fit drill arbor: 1-1/4"-7 female