Name: IRWIN SPEEDBOR SUPREME 7/8-in x 7-1/2-in Woodboring Auger bit Drill Bit
Brand: IRWIN
SKU: 5001969665
Price: 33.98 USD
Availability: InStock
Rating: 4.4 (23 reviews)

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Charge through nail-embedded wood with the 7/8-in X 7.5-in SPEEDBOR SUPREME™ Auger Bit. Designed to deliver 3X longer life (On average compared to legacy IRWIN 7/8-in ship auger bit, SKU #47414) in challenging wood-drilling applications, this Auger Bit features a re-sharpenable blade and black oxide coating for enhanced corrosion resistance. Make quick, clean holes and avoid work interruptions with durable, bi-metal construction engineered to withstand repeated nail strikes. With the 7/8-in X 7.5-in SPEEDBOR SUPREME™ Auger Bit, you’ll REIGN SUPREME™ on the jobsite and be equipped to tackle any application with ease.

CHARGE THROUGH NAIL-EMBEDDED WOOD: High-speed steel cutting edge maintains its sharpness
FAST, HIGH-PERFORMANCE DRILLING: Pull through material with speed and ease with an aggressive parabolic screw tip
EXTENDED BIT LIFE: Re-sharpenable blade
CONVENIENT BIT CHANGES: 3/8-in quick change hex
IMPROVED CORROSION RESISTANCE: Features black oxide coating
FAST AND EFFICIENT CHIP EJECTION: Optimized flute geometry

General
Sub-Brand	SPEEDBOR SUPREME	Case Type	N/A (no case)
Material	Black oxide coated HSS	Shank Type	Hex
Package Quantity	1

Dimensions
Bit Diameter (Inches)	7/8-in	Shank Size	7/16-in
Bit Length	7-1/2-in

Features
Quick Change	Yes	Set/Individual	Individual

Compatibility
Brand/Model Compatibility	Universal	For Use on Wood	Yes
For Use on Metal	No	For Use With	Power tool

Warranty
Warranty	None

Certifications
CA Residents: Prop 65 Warning(s)	Prop 65 WARNING(S) -

Miscellaneous
UNSPSC	27112800

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Review

4.4 out of 5

23 Reviews

2 Star

100% Recommend this product

Ratings may include incentivized customer reviews.

23 Customer Reviews

Sort By

Borin holes

Would Recommend

Does what it is intended to do, bore holes in studs

Fort_bosausMay 17, 2026
From SPEEDBOR SUPREME 1-in x 7-1_SLASH_2-in Woodboring Auger bit Drill Bit Verified Purchaser

Was this Review Helpful ?

Great Drill Bit

Would Recommend

Great drill bit. I needed to drill through 6 inches of a pressure treated 4x6x12 and it went through like butter. No binding.

Chappy1March 14, 2026
From SPEEDBOR SUPREME 1_SLASH_2-in x 7-1_SLASH_2-in Woodboring Auger bit Drill Bit Verified Purchaser

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COMPARE PRODUCTS

		Name	Current Item IRWINSPEEDBOR SUPREME 7/8-in x 7-1/2-in Woodboring Auger bit Drill Bit
		Ratings	23
		Bit Diameter (Inches)	7/8-in
		Material	Black oxide coated HSS
		Bit Length	7-1/2-in
IRWINWeldTec 5/8-in x 17-in Woodboring Auger bit Drill Bit	IRWINSPEEDBOR SUPREME 7/8-in x 18-in Woodboring Auger bit Drill Bit	IRWINSPEEDBOR SUPREME 5/8-in x 18-in Woodboring Auger bit Drill Bit	IRWINSPEEDBOR SUPREME 1-3/4-in x 6-in Woodboring Self-feed bit Drill Bit	IRWINSPEEDBOR SUPREME 1-in x 18-in Woodboring Auger bit Drill Bit	IRWINSPEEDBOR SUPREME 3/4-in x 18-in Woodboring Auger bit Drill Bit	IRWINSPEEDBOR SUPREME 2-1/8-in x 6-in Woodboring Self-feed bit Drill Bit	IRWINSPEEDBOR SUPREME 1-1/2-in x 6-in Woodboring Self-feed bit Drill Bit	IRWINSPEEDBOR SUPREME 2-in x 6-in Woodboring Self-feed bit Drill Bit
25	50	50	26	50	50	26	26	26
5/8-in	7/8-in	5/8-in	1-3/4-in	1-in	3/4-in	2-1/8-in	1-1/2-in	2-in
High-speed steel	Black oxide coated HSS	Black oxide coated HSS	Black oxide coated HSS	Black oxide coated HSS	Black oxide coated HSS	Black oxide coated HSS	Black oxide coated HSS	Black oxide coated HSS
17-in	18-in	18-in	6-in	18-in	18-in	6-in	6-in	6-in