Description
Triumph 099101 ThunderBit 29-Piece Set HSS Black & Bronze Oxide 1/16″-1/2″ by 64ths is a versatile drill set designed for professional and industrial metalworking. Each drill features a heavy-duty HSS core with a black and bronze oxide finish, providing superior strength, durability, and corrosion resistance. The set covers sizes from 1/16″ to 1/2″ in 64ths, making it ideal for precision drilling in metal, alloys, and other materials. Unique spiral flutes improve chip ejection and coolant flow, while the 135° split point ensures accurate, walking-free starts. All drills have a 3/8″ reduced shank for easy mounting and optimal performance.
Features:
- High-speed steel (HSS) construction for exceptional durability and heat resistance.
- Black & bronze oxide finish for enhanced corrosion protection and extended tool life.
- 29-piece set covers sizes 1/16″ to 1/2″ in 64ths for versatile drilling needs.
- Unique spiral flute design improves chip removal and coolant flow.
- 135° split point prevents walking and ensures precise hole starts.
- 3/8″ reduced shank for easy and secure mounting in drill chucks.
Benefits:
- Drills precise holes in a wide range of metals and materials.
- Heavy-duty construction reduces breakage and increases tool life.
- Spiral flutes and split point design ensure smooth, accurate drilling.
- Complete set reduces the need for multiple individual drills.
Technical Specifications:
- Model: 099101
- Material: High-Speed Steel (HSS)
- Finish: Black & Bronze Oxide
- Set Size: 29-piece, 1/16″–1/2″ by 64ths
- Shank: 3/8″ reduced
- Point Angle: 135° split point
- Applications: Precision drilling in metal, alloys, automotive, industrial, and professional projects






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