Irwin 39108 1/2-Inch by 18-Inch Installer Twist Drill Bit
1/2" x 18", #2 Long Installer Bit, Degree Point For Fast Boring, Hole In Flute Makes It Easy To Pull Wire Through Walls, Ceilings & Floors, Made Of Premium Alloy Steel For Boring Into Wood, Plaster & Metal Lath, Ideal For Installation Of Small Wire For Telephones, Cable TV, Computers & Security System, Pouched.