two ways to go about this, the 30 piece-10 buck drill set, that u'll need to replace, but hey for 10 bucks, it should get you through the job and who gives a [censored] when u gotta buy new ones, or drop the money on a good set, that with proper use and a little lubrication, should last you darn near forever
I did option one for the past 2 years or so,then got sick or replacing [censored] and went with the good stuff