Left hand drills are used to remove broken bolts
These bits are made from Hi-Molybdenum M7 which has a melting point of 4753 Fahrenheit
Drill Hog 37 Pc Hi- Molybdenum M7 Drill Bit Set
USA Made by Norseman
Drill Hog Challenge
21 Pc Jr Drill Bit Set Index Molybdenum M7 MOLY Lifetime Warranty Drill Hog® Left hand drills are usedDrill Hog USA 21 Pc Hi Molybdenum M7 Drill Bit Set Includes: 21 Fractional Sizes 1 16" 3 8" 1 16" to 3 8" by 1 64ths Sizes: 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: Hi Molybdenum M7 HSS Steel Sized in 1 64th Increments (Does not Skip any Sizes) 135 Degree Split Point Prevents "Walking" Tri Flat Shank Prevents "Spinning" in Chuck