We do not recommend drilling holes in the picks. Holes compromise the structural integrity, tone, and flexibility of the picks. Though they are very slick on the strings, BlueChip picks have a naturally “tacky” feel in your hand and we do not feel they require holes for grip.
However, if you must drill holes in these picks, it can be done with any standard drill and drill bit. Bear in mind that drilling holes does void your 30 day guarantee.