hy kstrauss, you are right, that's a center drill ... my english, my bad

yes, it is indeed 60*, but it works well for those parts where is only required to have a "chamfer" instead of a sharp corner

even if 60* is the most common shape, there are also center drills with different angles, or with 2 tapers

sometimes, if a thread is required, a 60* will be less agressive and allow the tap to guide smoother into the hole, compared to a 90* / kindly

ps : is it always raining ?