Material: Metal

Shank Diameter: About 5mm

Size: 3/4/5/6/7/8/9/10/11/12/14 mm

--This diamond coated core drill bit removes a complete circle from glass, tiles, marble, granite, ceramic or other materials and only needs water for lubrication.

--Always use lubrication (water), otherwise the diamond core drill will burn.

--Can be used with a standard electric drill.

--Start your hole diagonally, make a round trace and then hold drill straight.

1. Start your hole diagonally, make a round trace and then hold drill straight.

2. Always use lubrication (water), otherwise the diamond core drill will burn.

1.Please allow a bit error due to manual measurement.Pls make sure you do not mind before you bid.

2.The color may have different as the difference display,pls understand.