Bosch HSS-Co Twist Drill Bit 5.5 x 57 x 93 mm

This single-piece Bosch HSS-Co twist drill bit is designed for accurate holes in dense metal. Made from cobalt-alloyed high-speed steel, it withstands the friction of demanding fabrication work. The material grade keeps its integrity when drilling through hardened substrates. It works as a direct replacement for worn bits or as a targeted addition to an existing toolbox. Buyers looking for a dedicated accessory for metal drilling will find this single item fits that purpose. Workshops routinely rely on such task-specific cutters for consistent results.

Measuring 93 mm in overall length, the bit offers a practical balance of reach and rigidity. A 57 mm working length sets the maximum depth before the flutes end. At exactly 5.5 mm in diameter, it produces clearance holes for specific fasteners and hardware. The distinct bronze colour gives a quick visual identifier among standard black-oxide alternatives. Its profile is strictly functional, aimed at reliable material penetration. Supplied as a standalone unit, the item provides exactly what is needed without surplus pieces.

• Cylindrical shank integrates securely with standard keyed and keyless drill chucks.
• 135° point angle minimises surface wandering when starting a new hole.
• Two active cutting edges clear metal chips rapidly to maintain steady cutting progress.
• Rated for stainless steel, alloyed steel, non-alloyed steel, cast iron, and cast steel.
• Suitable for standard drills and appropriately chucked rotary hammer setups.