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The BSC PREFERRED QJDIB-DB-029B is a 23/64-inch black oxide drill bit precision-ground from high-speed steel for general-purpose drilling tasks. The 135-degree split point eliminates bit walking at the start of a hole, delivering accurate placement without a center punch on most surfaces. The black oxide finish provides corrosion resistance and reduces friction during use. A reinforced core increases resistance to breakage under load. Licensed tradespeople and experienced DIYers rely on this bit for everyday drilling across metal, wood, and plastic substrates.
This drill bit is suited for residential and light commercial applications where a reliable general-purpose bit is needed. Common use cases include drilling angle iron, dimensional lumber, and PVC. The 23/64-inch diameter makes it a practical choice for fastener clearance holes and standard pilot applications across a range of materials encountered in HVAC, electrical, plumbing, and general construction work.
Designed as a general-purpose replacement or supplemental drill bit for use with standard keyed and keyless drill chucks compatible with 23/64-inch shank sizes.
This bit is installed and used by HVAC technicians, electricians, plumbers, and general tradespeople performing field drilling tasks. Secure the workpiece before drilling and use appropriate speed settings for the material being drilled — lower speeds for metal, higher speeds for wood and PVC. Wear appropriate eye protection. Inspect the bit for cracks or dull edges before each use and replace if damaged.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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