Check the listing for details. Big Gator Tools V-DrillGuide Standard Size Portable Drilling Guide. Condition: New. Listed at 39.48 USD. NEW, Big Gator Tools V-DrillGuide Standard Size Portable Drilling Guide, 154758, 17 drill sizes - 1/8" to 3/8" in 1/64" increments, Use on flat surfaces, round parts, and corners, Special nickel alloyed steel heat treated for durability, Non-plated material with light oil coating to prevent rust, The BIG GATOR TOOLS V-DrillGuide™ is like a portable drill press for precision alignment! V-groove along the bottom of the guide allows for perpendicular alignment with all drill sizes on round parts and corners. Bottom surface is precision ground to assure stability and accurate perpendicular alignment on flat surfaces.Drill guide is sized for fractional drill bit sizes of 1/8" to 3/8" in 1/64" increments. Guides are made from special nickel alloyed steel that is heat treated for durability.