Big Gator drill and tap guides are portable American-made pocket tools that are perfect for repairs and new screw thread insert jobs. Drill guides allow you to drill straight every time, offering you the functionality of a portable drill press that gives precise alignments every time. Tap guides automatically square up the tap to the surface, allowing for perpendicular alignment and eliminating most tap breakage as well. All alloyed steel guides are heat treated for durability, and come with lifetime warranties from Big Gator Tools.