5" Wet Diamond Core Drill bit. 1 1/4" x 7 Arbor thread. Used for heavy reinforced concrete or cement wall or floor core drilling. Wet use only. 600 RPM or less core drill machine. This core drill bit is tough. We cut on average nearly 75 hole with each 5" core drill bit we use. Laser Welded diamond segmented teeth.
Here is a picture of a 5" core drill plug that we cut with one of our 5" core drill bits. Notice the hunk of rebar this bit cut through, and then still went on to finishh the project where there was a total of 92 core drill holes in all.