5/8"-11 Male to 1-1/4"-7 Female Core Drill Adapter for Core Bits

I needed this to use a Sali diamond core drill and it worked great without any problems.

Well made adapter.

This is what i needed to adapt my 4.25" core hole bit to my hilti drill. Did the job and plenty of life left in it.

A little pricey but worked as described

Paired with an extension and 2.5” diamond core bit. Worked great. Nothing but praise for a DIY concrete drilling setup.

I used the Core Drill Adapter 1-1/4"-7 Male to SDS PLUS adapter with a Bosch Bulldog and 4.5" core bit to bore some holes in 4" concrete slabs, and even though I was VERY careful to not let the bit seize in the hole or apply sideways/angled torque on the bit, the SDS-end of the adapter bent.This bit is just a bad idea for use with larger (2"+) core bits for concrete boring because the diameter of the SDS adapter is just too small to give it enough strength to handle the torque of a larger core bit in this application.

used to core bore a 2-3/4 hole threw a 10 inch concrete footing . I used a dewalt variable speed mixing drill also kept the bit wet throughout the whole cut hit rebar cut right through it had to pull out the bit remove rebar because it was jammed inside the bit. RECOMMEND letting drill cool down during the cut or u will probily burn the drill out. Overall the core bore bit along with the adapter got the job done

Your tool is the best. Thank you.

After going 10 stores finally find @amzon

muy buen producto!! y super rapido el envio.

Se veía de muy buena calidad y bastante robusta, pero me equivoqué en la compra y tuve que devolver, el tamaño de la rosca tenía que ser en el sentido contrario, de Female to Male.

Worked as needed with my dewalt sds and a 7/8 Milwaukee core bit

Nice adapter, any longer and you might get a bit more torque flex.