Bosch TI21A 21-piece Titanium Metal Drill Bit Set

Product Description

The ROBERT BOSCH TOOL GROUP TI21A is a 21-piece titanium-coated metal drill bit set designed for drilling through steel, iron, aluminum, and other metals. The set includes a full range of bit sizes from 1/16 inches up to 1/2 inches, making it a practical solution for trade professionals who need a ready-to-go assortment on the job. Each bit features a self-starting point that eliminates the need for a center punch on most applications, and a balanced double-flute geometry that promotes straight, clean holes and efficient chip evacuation. The titanium coating extends service life to approximately 6 times longer than standard high-speed steel bits.

This set is suited for metal fabrication, HVAC installation, plumbing rough-in, electrical work, and general mechanical applications where drilling into sheet metal, structural steel, or aluminum is routine. The range of included sizes covers the most commonly needed diameters in light industrial and residential trade work. The set is packaged as an individual unit for easy storage and jobsite transport.

Key Features

• 21 pieces covering 1/16 inches through 1/2 inches in common trade sizes
• Titanium coating rated for approximately 6 times the service life of standard high-speed steel bits
• Self-starting tip geometry reduces the need for center-punching before drilling
• Balanced double-flute design promotes straight holes and efficient chip removal
• Sized for everyday metal drilling tasks across HVAC, plumbing, and electrical trades

Compatibility

Designed for use in standard 3-jaw drill chucks compatible with fractional-inch shank drill bits, suitable for corded and cordless drills used in metal drilling applications.

Installation Notes

Drill bits of this type are installed and serviced by licensed tradespeople and general mechanics using standard 3-jaw drill chucks. Always secure the workpiece before drilling and use appropriate cutting fluid or lubricant when drilling through hard metals to reduce heat buildup and extend bit life. Wear appropriate eye protection per applicable jobsite safety requirements. Inspect bits for wear or chipping before each use and replace any bit that shows visible damage.