Titanium Nitride (TiN) is a very hard coating that helps prolong the sharpness of these drill bits and reduces the amount of time you spend sharpening them.

Includes the following sizes: 1.0mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm, 3.5mm, 4.0mm, 4.5mm, 5.0mm, 5.5mm, 6.0mm, 6.5mm, 7.0mm, 7.5mm, 8.0mm, 8.5mm, 9.0mm, 9.5 and 10.0mm. Weight: 4.1kg.