Irwin Irwin Hss 5/16" Dia Carded Accessories grit and light obstructions from

grit and light obstructions from duct | Pulling eye on one end and smaller twisted eye on the other end for tailing line allows bi-directional use | Can be pulled to loosen dried material before using mandrels or spreader swabs | For use in 6-Inch ductsAmazon

60 Degree and 90 Degree bends

Measures 48-inch wide by 25-Inch high by 24-inch deep

From the company's beginning

Irwin Irwin Hss 5/16" Dia Carded Accessories grit and light obstructions from733 series. Fractional straight shank, self centering tip for clean fast starts, Jet Point for clean entry and faster drilling stays sharp longer, high speed steel features a black body and gold flute, three flatted shank on 3 16" and above for better chuck grip. Drills more holes and drills faster than other leading drill bits. 135 split point.