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 Why is Alfred failing to lock? Do I need to drill holes in my door? How do I restore my Alfred DB series to factory settings? Is my door suitable for installation? Comments 0 comments Please sign in to leave a comment.