Big Gator Standard V-TapGuide STD500NP 

The tap guide holes are sized for ANSI Standard Ground Hand Taps. Standard V-TapGuide^® has 32 Standard Ground Tap Sizes (9 holes): 0-80, 1/64, 1-72, 2-56, 2-64, 3-48, 3-56, 4-36, 4-40, 4-48, 5-40, 5-44, 6-32, 6-36, 6-40, 8-32, 8-36, 8-40, 10-24, 10-32, 1/4-20, 1/4-28, 5/16-18, 5/16-24, 3/8-16, 3/8-24, 7/16-14, 7/16-20, 1/2-13, 1/2-20, 5/8-11, 5/8-18". (The guide does cover tap sizes 0-80 to 5/8 except #12 and 9/16. 0-80 to #6 have the same size shank so only one hole size is needed.) 

Order includes (none of the prop items used in pictures):

• Standard V-TapGuide
  

Automatically squares up the tap with the surface.
A V-groove along the bottom of the V-Tap Guide allows for perpendicular alignment with all tap sizes on round parts or corners.
Portable pocket size.
Natural steel finish non-plated.
Made from special nickel alloyed steel that is heat treated.
The bottom surface is ground to assure stability & accurate perpendicular alignment on flat surfaces.
Supplied with a handy plastic storage case.
Guide holes are sized for ANSI standard ground taps.
Made in USA.