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The BSC PREFERRED QJDIB-SB-010 is a 7/8-inch spade bit designed for fast, accurate boring in wood and wood-composite materials. Built from high-carbon steel with a heat-treated shaft and tip, this bit resists bending under heavy drilling loads and maintains edge integrity across repeated use. The 1/4-inch universal quick-change hex shank allows tool-free bit swaps on compatible cordless and corded drills. At 6-1/4 inches in overall length, it reaches into framing cavities and structural members where shorter bits fall short. Electricians, plumbers, and general contractors routinely reach for spade bits of this profile when running conduit paths or pipe penetrations through dimensional lumber.
This spade bit suits residential and light commercial applications where through-hole drilling in wood framing, sheathing, or subflooring is required. The 7/8-inch diameter is a common size for running 3/4-inch conduit knockouts, cable bundles, and small-diameter pipe penetrations. It is sold individually and sized for use in standard 3/8-inch or 1/2-inch chuck drills equipped with a quick-change adapter or a 1/4-inch hex chuck.
Designed for use with cordless and corded drills equipped with a 1/4-inch quick-change hex chuck or a standard 3/8-inch or 1/2-inch keyed or keyless chuck.
Spade bits are installed and removed by electricians, plumbers, and carpenters using standard drill drivers. Ensure the drill is powered off and the battery removed or the drill unplugged before changing bits. When boring near energized wiring or gas lines, follow applicable NEC and IFGC clearance requirements and confirm de-energization before drilling. Use moderate feed pressure to prevent tip walking and reduce heat buildup in the cutting edge.
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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