Bosch TI21A 21 Piece Titanium Nitride Coated Metal Drill Bit Set with Three Flat Shank and Storage Case for High Carbon Steel Hardwood and Plastic

Engineered for Endurance: Professional 21-Piece Titanium Nitride Coated Drill Bit Set

The Bosch TI21A 21-Piece Titanium Nitride Coated Metal Drill Bit Set is a master-class in high-performance drilling, specifically engineered for the rigorous demands of HVAC technicians, facility maintenance pros, and heavy-duty contractors. These bits are optimized for rapid, clean penetration through high-carbon steel and light-gauge metals, but they are equally at home in hardwoods, softwoods, and abrasive plastics. The specialized titanium nitride (TiN) coating significantly reduces friction and heat buildup, providing up to 2X longer tool life compared to standard high-speed steel bits. Whether you are performing site-prep or intricate machinery maintenance, this set offers the professional reliability and longevity required for high-volume jobsite applications.

Precision is at the heart of the TI21A design. Every bit features a sophisticated split-point tip that eliminates “skating” or wandering upon contact, ensuring that every hole starts exactly where you intend. For larger bits sized 3/16-inch and above, Bosch has integrated a three-flat shank design that provides a superior mechanical lock in your drill chuck, preventing the slipping and spinning that often ruins workpieces. To keep your workflow efficient, each bit is laser-marked with high-visibility diameter readings, and the entire set is housed in a rugged, jobsite-ready carrying case. Invest in Bosch engineering to achieve faster drilling cycles and cleaner results in every material you encounter.

Key Features

• Precision Split-Point Tip: Engineered for no-skate starts, delivering clean and accurate holes without the need for a center punch.
• Titanium Nitride (TiN) Coating: Generates significantly less friction and heat, resulting in a 2X longer lifespan over standard bits.
• Anti-Slip Three-Flat Shank: Promotes a better grip for bits 3/16″ and larger to guard against slipping under high torque.
• Industrial Versatility: Designed for general-purpose drilling in high-carbon steel, light-gauge metal, wood, and plastic.
• High-Visibility Markings: Permanent laser-etched diameter markings ensure you never have to guess which size you are reaching for.
• Rugged Storage Case: Heavy-duty blow-molded case keeps your bits organized and protected in even the harshest jobsite conditions.

What’s Included

• (2) 1/16 In. Drill Bits
• (2) 5/64 In. Drill Bits
• (1) 3/32 In. Drill Bit
• (1) 7/64 In. Drill Bit
• (2) 1/8 In. Drill Bits
• (1) 9/64 In. Drill Bit
• (1) 5/32 In. Drill Bit
• (1) 11/64 In. Drill Bit
• (2) 3/16 In. Drill Bits
• (1) 13/64 In. Drill Bit
• (1) 7/32 In. Drill Bit
• (1) 15/64 In. Drill Bit
• (2) 1/4 In. Drill Bits
• (1) 5/16 In. Drill Bit
• (1) 3/8 In. Drill Bit
• (1) 1/2 In. Drill Bit
• (1) Heavy-Duty Carrying Case

Specifications

Pro-Tip: To maximize the life of your titanium-coated bits when drilling through thick metal, always use a specialized cutting fluid or lubricant. This further reduces heat buildup and friction, preventing the titanium coating from wearing down prematurely and keeping the cutting edge sharp for hundreds of additional holes.

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