Product Description
The IRWIN 88814 is a 7/8-inch spade-style wood drill bit designed for fast, aggressive boring through wood framing, decking, and rough carpentry. The chamfered cutting edge improves durability during sustained cutting, while the optimized point tip — wider and longer than previous-generation designs — reduces splintering at entry and exit. The patented Blue-Groove cutting edge clears chips quickly, maintaining speed throughout the bore. At 6 inches in working length, this bit reaches through standard stud walls and dimensional lumber with a standard drill or right-angle drill. Carpenters, electricians, and plumbers routinely use spade bits like this for running cable or pipe through framing.
This bit is suited for residential and light commercial rough-in work where fast wood removal matters more than finished-hole quality. Typical applications include boring through wall studs, floor joists, and blocking for conduit, pipe, or cable runs. The 7/8-inch diameter is a common size for 1/2-inch conduit rough-in clearance and similar trade applications. It is packaged individually and is compatible with any standard 3/8-inch or 1/2-inch keyed or keyless chuck drill driver.
Key Features
- Chamfered cutting edge for improved durability in repeated wood cutting
- Optimized wide-and-long point tip minimizes splintering and helps control feed rate
- Patented Blue-Groove cutting edge for aggressive chip removal and fast drilling
- 7/8-inch diameter x 6-inch length suits deep rough-in boring through framing
- Fits standard 3/8-inch and 1/2-inch drill chucks
Compatibility
Designed as an OEM-style replacement-grade spade bit for use in any standard 3/8-inch or 1/2-inch keyed or keyless drill chuck.
Installation Notes
Spade bits are installed and removed by licensed electricians, plumbers, and carpenters working to NEC, IPC, or IFGC rough-in requirements as applicable. Before boring, confirm no utilities are present in the drilling path. Use a variable-speed drill and allow the point tip to center fully before applying feed pressure to reduce splintering. Withdraw the bit periodically on deep cuts to clear chips and prevent binding.
Technical Specifications
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Bit Diameter: 7/8 inches
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Working Length: 6 inches
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Overall Length (packaged): 8.4 inches
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Width (packaged): 1.9 inches
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Height (packaged): 0.3 inches
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Weight: 0.150 pounds
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Product Type: Spade Drill Bit
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Warranty: NLW
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Country of Origin: China
Standard Information
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Brand: IRWIN
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Manufacturer Part Number: 88814
