Diameter sizes available from 4.5mm - 25mm Wall thickness of between 0.4mm - 0.6mm These electroplated thin wall diamond core drills have a thin wall compared with our standard diamond core drills. This allows for a more precise cut with a better surface finish and less chipping. They should be used on delicate, hard materials such as optical glass, watch glass, sheet glass, thin glass, thin slices of stone, fossil, or any stone that is 6.5 or below on Moh's scale of hardness. These thin wall diamond core drills are manufactured and designed with a precision outer diameter for drilling a hole, and a thin wall to enable precise extraction of a core. If you're considering our diamond core drills for fossil preparation or sample extraction, we recommend referring to the technical tab below for our detailed inner core specifications and dimensions. ***Sold Individually ***
