#mm with drill bit

Happybuy 8 Inch/205MM Diamond Core Drilling Machine 3980W Diamond Core Drill Rig with Stand and Drill Bits, Wet Dry Core Drill Rig for Diamond Concrete Drilling Boring

Happybuy 6 Inch/160MM Diamond Core Drilling Machine 1600W Diamond Core Drill Rig with Stand and Drill Bits, Wet Dry Core Drill Rig for Diamond Concrete Drilling Boring