Bosch SDS Max Break Through Drill Bit 45 x 450 x 600 mm

The Bosch PRO SDS-max 45 mm breakthrough drill bit is a single-piece masonry accessory built for structural modifications. It is designed for creating large penetrations in solid walls rather than standard shallow recesses, typically to form the through-holes required for routing cables, conduit, or plumbing lines. With a 45 mm cutting diameter, it provides sufficient clearance for thick utility pipes. To achieve these wide openings, the bit is engineered to break down the core material continuously, using a specialised head geometry that pulverises the target area instead of cutting only the perimeter.

Material extraction is handled by a U-shaped, two-flute shaft profile running along the body of the bit. Dust and debris are channelled away from the cutting face through these deep grooves. This clearing action helps maintain steady drilling progress and prevents binding in deep cavities. The base section is designed to resist rotational slip under high torque. A two-tone bronze and silver finish provides visual contrast against grey masonry dust for easy identification on site. Tradespeople use this bit when running installations through thick exterior or load-bearing walls.

• Tungsten carbide construction withstands heavy mechanical stress during continuous concrete drilling.
• 600 mm overall length provides extended reach for passing through thick structural barriers.
• 450 mm working length allows deep continuous boring before the cavity needs manual clearing.
• Three cutting edges distribute the frictional load evenly across the drill head.
• Rated for direct use on concrete, solid brick, and limestone.
• Standard SDS-max shank connects securely to compatible heavy-duty rotary hammers.