Big Gator Tools V Tap and V Drill Guides - Complete tool set of 6 Guides Automatically squares up the tap or drill with the surface. V-groove along the bottom of the guides allows for perpendicular alignment on round parts or corners Natural steel finish, non-plated, Portable, pocket-sized. Lifetime Manufacture Warranty Made from special nickel alloyed steel that is heat treated for durability 100% Made in the USA. Eliminates most tap breakage due to improper alignment!