Features:
* Precision ground center point allows correct placement and starting of drilling operations.
* Make brad point to sure it more sharp and smooth,make your drilling work more easily.
* Includes common metric sizes from 3 to 10mm in 1mm increments.
* Can drill more faster and smooth on the wood,polywood,plastic,hard or soft materials.
Note:
1.Hand electric drill speed should be less than 1000rpm
2.Not for drilling metal,glass,title