Big Gator Tools Mini V-Drill Guide Product Overview The Mini V-DrillGuide is like a portable drillpress for precision alignment! V-groove along the bottom of the guideallows for perpendicular alignment with all drill sizes on round partsand corners. Bottom surface is precision ground to assure stability andaccurate perpendicular alignment on flat surfaces. MINI V-DrillGuidehas 21 holes: 10, 21, 25, 29, 30, 1/8″, 33, 7/64″, 36, 37,38, 40, 3/32″, 43, 45, 47, 5/64″, 50, 1/16″, 53, 3/64″.Guides are made from special nickel alloyed steel that is heat treated fordurability. Drill straight – every time! Features 21 Drill Sizes: #10, 21, 25, 29, 30, 1/8, 33, 7/64, 36, 37, 38, 40, 3/32, 43, 45, 47, 5/64, 50, 1/16, 53, 3/64″. Covers all tap drill sizes for tap sizes: 10-32 down to 0-80. The portable V-Drill Guide ensures straight and accurate hand drilled holes on flat surfaces, corners and round parts! Heat treated for durability. Side alignment marks allow accurate hole locating. 100% Made in U.S.A. Details Part Number: SDGMINI Item Weight: 3.68 ounces Product Dimensions: 3.9 x 0.6 x 0.5 inches California residents: Click here for Proposition 65 warning Item model number: SDGMINI Size: 3.63Lx.63Wx.5H Material: Metal