Bosch Diamond Core Drills
Bosch diamond core drills are power tool and hand. It uses a rotary drill to build precisely measured holes with a diamond core attached. If you are cutting or drilling through very hard materials. Such as Sapphire then bear in mind you will need a lot of patience and perhaps more drill bits than you would if you were drilling a hole through the glass.
It is ideal to create openings in a wide variety of materials including concrete, metal, and glass. Diamond is one of the strongest materials around, so drill bits featuring diamonds. It has the sort of capabilities that other bits just cannot match. It has a cylindrical tool holder with high reparability; new bolt holes can be drilled when the original bolt holes are clogged with a broken bolt.