New assorted 3-12mm diamond coated hole saw / drill bits (total: 10 pieces). Suitable for use in drilling holes in glass, marble, tile or granite.

One of each size, 10 in full set:

3mm outside diameter, 3mm shank, 25mm drillable length

4mm outside diameter, 4mm shank, 25mm drillable llength

5mm outside diameter, 5mm shank, 25mm drillable length

6mm outside diameter, 6mm shank, 25mm drillable length

7mm outside diameter, 6mm shank, 30mm drillable length

8mm outside diameter, 6mm shank, 30mm drillable length

9mm outside diameter, 6mm shank, 30mm drillable length

10mm outside diameter, 6mm shank, 30mm drillable length

11mm outside diameter, 6mm shank, 30mm drillable length

12mm outside diameter, 6mm shank, 30mm drillable length

The shanks on these drills are hollow so you can feed water through the drill bit for cooling while you are drilling.

Use lots of water when drilling or you will wear the bits out rapidly and break lots of glass! You can just use a dripper or a water bottle, or make a dam around the hole with putty or wax and fill it with water.