Irwin 326020 Percussion Masonry Drill Bit 5/8"X12" Long Maximum Duct Height: 4"

Maximum Duct Height: 4"

flexible foam to air seal the gap around a window or door frame and the rough opening

Bi-material cushion handle for strong grip and comfort

Exclusive vari-pitch base adjusts to 12/12 roof pitch

Irwin 326020 Percussion Masonry Drill Bit 5/8"X12" Long Maximum Duct Height: 4""IRWIN" MASONRY DRILL BIT Chrome vanadium spring steel shaft. Flute design speeds dust removal for fast drilling. Shot peen finish increases surface durability and reduces potential breakage. Made to ANSI specifications. Fits all hammer drills with 3 jaw or Jacobs chuck Chrome vanadium shaft through hardened to 50 53HrC Patented flute geometry removes dust from the hole quicker for fast drilling and long life Up to 150% faster than other competitive