Big Gator Tools’ Standard V-TapGuide (STD500NP) is a portable tap guide that accurately guides hand tapped threads on the inside of a hole to accept a machine screw or bolt. If you start every hole straight, it will help prevent tap breakage and increase the tap life.
The tap guide can also be used to restore an internal thread that has been damaged or to cut a new, larger thread in the case of severe damage or stripping.
The V-TapGuide stands out in the industry and is considered innovative due to the 90° “v-groove” design that runs through the entire guide. The “v-groove” is found on the bottom of the guide and allows users to drill on round or cornered material.
The bottom also features a flat base to allow users to work on flat surfaces. The entire tap guide is heat-treated for strength and durability. The hole sizes are permanently embedded onto the guide and smooth.
Link: Big Gator Tools