Vacuum Brazed Diamond Core Drill Bits Crown Water Sink Washbasin Hole Opener

This type vacuum brazed diamond core drill bits are suitable for electric portable angle grinder or drilling machines for drilling water sink washbasin holes of ceramic porcelain marble granite concrete quartz and other composite materials, great for Home, Hobby, Craft, Construction, etc.

Dry or wet use, water coolant will be much better for drilling performance.

Code No.	Diameter (mm)	Connection
DDB-VB-03-40/60	40/60	5/8"-11 M14 Hexagonal Shank
DDB-VB-03-45/65	45/65
DDB-VB-03-50/70	50/70

Instructions for use:

1. When operating, first incline the drill bit at 45 degrees, and slow down the speed of the electric drill, then erect the electric drill.

2. When it is about to drill through, slow down the speed again.
3. During the whole drilling process, keep adding water to cool.

The above specifications & photos are for reference, other specification may be available as per customer's demand.

Vacuum brazed diamond tools use the special metal bonding and under the vacuum environment make the diamond brazed on the tools, So it will be more fastness compared to the electroplated diamond tools. More importantly, it can dry use even work at the poor environment. As it’s high efficiency, the working life is also longer than the electroplated diamond tools.