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BOSCH HC8555 4 In. x 22 In. SDS-Max Rotary Hammer Core Bit Ideal for Applications in Masonry, Brick, Block, Concrete : Amazon.co.uk: DIY & Tools
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M14x740 SDS-Max Bosch Speed-X Hammer Drill Bit | SDS Speed X Drill Bits - Power Tools - Orbital Fasteners
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