Bosch SDS max Break Through Drill Bit 55 x 450 x 600 mm

The Bosch Pro SDS-max Breakthrough Drill Bit 55 × 450 × 600 mm is a single-piece tungsten carbide accessory engineered for routing large through-holes in masonry. This drill bit suits contractors who need to pass thick pipes or conduits through solid walls. Its design is centred on rotary hammer drilling, handling the high impact energy required for demanding structural work. The cutting head copes with hard mineral substrates and is rated for brick, concrete, and limestone. As a one-piece tool, it delivers consistent material removal across standard construction environments. The bit is built for deep wall penetration, so it handles dense aggregates without premature wear.

Attachment to power tools relies on a dedicated SDS-max shank shape for high-torque transmission. This fitment ensures direct compatibility with SDS-max rotary hammers, without the need for separate adapters. The secure interface prevents slipping and withstands the severe rotational forces of industrial hammer mechanisms. A bronze and silver colour scheme makes the attachment easy to spot on crowded job sites. Designed strictly for rotary hammer power sources, the bit transfers aggressive impact rates directly into the substrate. Built exclusively for heavy masonry tasks, it stays physically stable throughout demanding boring operations.

• 55 mm drill bit diameter clears wide channels suitable for large conduit and plumbing installations.
• 600 mm overall length extends the reach of the tool for thick masonry wall penetrations.
• 450 mm working length defines the maximum continuous boring depth achievable without withdrawing the bit.
• 3 cutting edges on the tip distribute impact loads evenly to maintain a straight drilling trajectory.
• U-shaped fluted cutting profile extracts masonry dust quickly to prevent clogging inside deep holes.
• Vacuum-brazed tungsten carbide material resists heat degradation during extended hammer drilling sessions.