Quality
We cut many 1" core's every year. Above you will see that this 1" core bit has an 5/8" x 11 tpi hub thread. 10mm Teeth.
Picture 3 is some steel flatbar, rebar and a 1" concrete core that this bit will cut. Our bit will devour reinforced concrete with any size rebar in it's path.
Average close to 40 to 60 holes drilled with this core drill bit with medium to lite weight concrete and more through brick or block structures.