SDS MAX (TE-Y) to 5/8" M Core Bit to Drill Adapter by BLUEROCK Tools Model #3 SDS Max style end fits SDS Max (TE-Y) style drills 5/8" 11unc Male Threaded end fits BLUEROCK Dry type core bits as well as other compatible threaded coring bits. Solid all metal construction The 2.5" Core Bit is shown for scale and not included with this adapter. Please see our separate listing for core bits and core bit packages.