These bits are made from HI-Molybdenum M7 Steel which has a melting point of 4753 Fahrenheit
These bits are made from Cobalt steel which has a melting point of 2723 Fahrenheit
17 Taps M3 to M12 in National Coarse (NC) and National Fine (NF)
This complete master drill index solves the problem
Drill Hog® 21 Pc Hi-Molybdenum M7 Drill Bit Set
21 Pc JR Drill Bit Set index Pig Steel M60 Lifetime Warranty Drill Hog® These bits are made fromDrill Hog USA 21 Pc Pig Steel M60 JR Steel Drill Bit SetIncludes: 21 Fractional Sizes 1 16" to 3 8"Sizes: 1 16" to 3 8" by 1 64thsSizes: 1 16", 5 64", 3 32", 7 64", 1 8", 9 64", 5 32", 11 64", 3 16", 13 64", 7 32", 15 64", 1 4" 17 64", 9 32", 19 64", 5 16", 21 64", 11 32", 23 64", 3 8"Specifications: Pig Steel M60 Steel1 64th Increments (Does not Skip any Sizes)Split Point Prevents "Walking"Includes Drill Hog Signature Steel Case with Pop Up TiersUSA