What tools do I need to drill holes? Blair April 10, 2019 19:13 Updated You will need the following tools to drill holes: Drill 2 1/8" Hole Saw 1" Boring Bit 7/64" Drill Bit 3/8" Drill Bit Chisel Hammer Related articles Is my door suitable for installation? Can I keep my existing mechanical deadbolt installation with my Alfred DB series lock? How do I restore my Alfred DB series to factory settings? Do I need to drill holes in my door? Comments 0 comments Please sign in to leave a comment.