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The Milwaukee Electric Tool Corp 48-20-7474 is a 1/2-inch by 12-inch SDS Plus 2-cutter rotary hammer drill bit designed for concrete and masonry applications. The bit features a centering tip for accurate spot drilling and enhanced rebar guards that extend service life in rebar-dense slabs. Variable flute geometry delivers up to 20 percent more holes per battery charge when used in cordless rotary hammers. Wear mark indicators alert the technician when the bit no longer meets ANSI dimensional requirements, removing guesswork on end-of-life. Reinforced flutes reduce vibration during operation and contribute to long-term bit durability.
This bit is suited for residential and commercial construction and renovation work where concrete core drilling, anchor setting, or through-hole drilling is required. It fits any SDS Plus rotary hammer on the market. Typical users include concrete contractors, electricians, and plumbers drilling penetrations for conduit sleeves, pipe hangers, and anchor bolts in poured concrete, concrete block, or brick masonry.
Designed for use with SDS Plus rotary hammers. Compatible with any tool accepting the standard SDS Plus shank interface.
Installation and drilling should be performed by a qualified tradesperson familiar with SDS Plus rotary hammer operation. Always wear appropriate PPE including eye protection and hearing protection when drilling into concrete or masonry. Confirm the drill path is clear of embedded conduit, rebar, or utilities before beginning. Follow all applicable local building codes and OSHA requirements for concrete drilling operations.
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