Charge through nail-embedded wood with the 3/8 x 18 in Speedbor® Supreme™ auger bit. Designed to deliver 3X longer life (on average compared to legacy Irwin® 3/8 ship auger bit, SKU #47406) 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 3/8 x 18 in Speedbor® Supreme™ auger bit, you'll REIGN Supreme™ on the jobsite and be equipped to tackle any application with ease. Irwin® Speedbor® Supreme™ Wood Boring Auger Drill Bit, 3/8 in Diameter, 18 in Overall Length, 1/4 in Shank, Quick-Change Hex Shank, High Speed Steel Cutting Edge, Black Oxide