Electroplated Diamond core drill bits are also called diamond hole saws. They are Mainly used for precise hole drilling in the block of glass, crystal, Fiberglass, tiles of ceramic and porcelain, marble, granite, stone and Other composite materials.

the Smallest diameter " D" that we can make is 1.5mm. We can custom make Special diamond core drills as per customer's drawings.Mini Core Drill Bits for glass (example).

D (mm)	L (mm)	L1 (mm)	H (mm)	D (mm)	Grit size
4	40	30	3	4	60 / 70 70 / 80
5				5
6				6
8				6
13				8
18				8
20				8
22				12
25				12
27				12
30				12
32				12
36				12
45				12
Other specification can be made according to customers requirements