Triumph Twist Drill

90909 Triumph Twist Drill Set 8 Piece T98CFractional, 1/2" Reduced Shank, S&D, Cobalt HSS, Bronze Oxide, 118 Point. Size: 9/16"-1" by 16ths

99816 Triumph Twist Drill Set 21 Piece Thunderbolt Cobalt T180HDC, Jobber Length, Fractional, ThunderBit®, Cobalt, Heavy-Duty, Bronze Oxide 21 piece Set  Size: 1/16"-3/8" by 64ths

99819 Triumph Twist Drill Set 15 Piece Thunderbolt Cobalt T18HDC, Jobber Length, Fractional, ThunderBit®, Cobalt, Heavy-Duty, Bronze Oxide 15 piece set, 135 point. Size: 1/16"-1/2" by 32nds

99821 Triumph Twist Drill Set 21 Piece Thunderbit Cobalt T17HDC, Jobber Length, Fractional, ThunderBit®, Cobalt, Heavy-Duty, Bronze Oxide 29 piece set, 135 point. Size: 1/16"-1/2" by 64ths