General Tools 15 Drill Gage, Number Size Drills 1 To 60 Made of heat treated heavy gage steel, machined and ground to close tolerances Number size drills 1 to 60 Hole sizes and decimal equivalents are permanently marked on the face 6-1/2" x 2-1/2" wide Conform to government specifications GG-G-86b Stainless steel Number size drills 1 to 60