Charge through nail-embedded wood with the 1-in x 7. 5-in SPEEDBOR™ SUPREME™ auger bit. Designed to deliver 3X longer life (on average compared to legacy IRWIN® 1-in ship auger bit, SKU #47416) 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 1-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.