Bosch PRO M4 SDS Max Masonry Drill Bit 35mm 520mm Pack of 1

The Bosch PRO SDS max-4 in 35mm diameter and 520mm length is one of the larger options in the range, designed for major bore drilling tasks such as large conduit entries and heavy structural fixings deep into reinforced concrete. Features and Benefits: • Lasts up to 1.5x longer than a Bosch SDS max-2 drill bit • 4-cutter head resists jamming and breakage on rebar • Deep flute channels for effective dust and chip removal • High-quality tungsten carbide for lasting durability