HIT-23 (DRILL GUIDE FOR RELOCATING CROSS BORE) A must-have tool for all locksmiths. Used to "move over" an existing 2-3/8" backset hole to 2-3/4" or 2-3/4" to 2-3/8" or to correct a mis-drilled hole. The HIT-23 attatches by screwing into the... (read more...)