No matter what wood-boring project you face, IRWIN makes a drill bit to do the job better. Whether the job at hand requires quick, clean holes or precise finish work, there's an IRWIN bit for it. Our mark of quality is stamped on the shank of our full range of bits for every application and every need. Full length heat treatment for extra durability. Quick change hex shank fits all drills.

Irwin® Speedbor® Blue-Groove™ Spade Bit Set, Standard Length, System of Measurement: Imperial, 3/8 in Minimum Drill Bit, 1-1/2 in Maximum Drill Bit, 8 Piece, 1/4 in Dia x 6 in L Shank, HSS, Bright

• Patented micro-groove cutting edge and spurs produce a smoother hole finish
• Rugged storage case with rubber over-mold for added impact resistance
• Sliding latch design provides added security
• Micro-groove cutting edges and spurs for fast, clean cuts

• https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/Irwin_43904_Catalog.pdf https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/Irwin_43904_Catalog.pdf