Bosch SDS Max-4 Hammer Drill Bit 35 millimetres x 400 millimetres x 520 millimetres

This single-piece Bosch SDS Max-4 hammer drill bit is a dedicated masonry accessory built for deep structural work. It is engineered for continuous hammer drilling into reinforced concrete, solid brick, lime and sand bricks, and concrete building blocks. The bit creates the clearance needed for large-format installations such as heavy-duty anchors or thick electrical conduits. Its flute geometry helps manage dust and debris removal as the shaft advances into mineral building materials. Consistent material clearance reduces the risk of the tip packing up when drilling through dense masonry walls.

Tool compatibility dictates how this accessory operates, as it requires an SDS Max rotary hammer to function correctly. The grooved shank provides a secure connection and efficient energy transfer from the power tool directly to the masonry. This physical interface allows the bit to withstand the substantial impact forces generated during continuous structural work. Operators rely on the specialised locking mechanism to maintain alignment and prevent the shaft from slipping under heavy rotational loads. It mounts exclusively into SDS Max systems, so standard keyed chucks or smaller SDS Plus tools cannot accept the shank.

• 35 mm drilling diameter creates correctly sized openings for substantial mechanical anchors and structural fixings.
• 520 mm overall length offers extended reach for passing entirely through thick structural walls.
• 400 mm working capacity defines the maximum continuous hole depth achievable in a single pass.
• 4-cutter head geometry helps prevent the bit from jamming when striking rebar or dense aggregate.
• Tungsten carbide material resists high temperatures and severe abrasion during prolonged hammer drilling.