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The DEWALT DW5228B25 is a carbide-tipped percussion drill bit designed for drilling into masonry, concrete, and similar hard substrates. Measuring 5/16 inches in diameter and 6 inches in length, this bit delivers consistent hole quality in demanding trade applications. It is packaged in a bulk quantity of 25, making it practical for contractors and service technicians who cycle through bits regularly. The carbide tip provides durability under the repeated impact stress generated by rotary hammer and hammer drill operation.
This bit is suited for residential and light commercial construction and service work where anchor holes, conduit penetrations, and fixture mounts must be drilled through concrete block, brick, or poured concrete. Electricians, plumbers, HVAC installers, and general contractors will find the bulk pack format efficient for stocking trucks and job boxes. The 5/16-inch diameter is a common size for wedge anchors and sleeve anchors used in mechanical and electrical trade rough-in work.
Designed as an OEM-style replacement and standard consumable for use with rotary hammer drills and hammer drills accepting standard straight-shank bits.
Installation should be performed by a qualified tradesperson following applicable codes such as the NEC or IPC where penetrations affect rated assemblies. Always wear appropriate PPE including eye protection and a dust mask when drilling masonry. Ensure the drill is set to hammer mode before beginning and confirm the bit is fully seated and secured in the chuck before operation. Blow out drilled holes with compressed air before setting anchors to ensure full embedment.
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