product descriptionIRWIN 1890796 Flexible Installer Drill Bit With Carbide Tip 1/4" x 48"
3/16" Flexible Shaft
Tungsten carbide tip for extended life in brick, block and mortar jointsShow as "Type M" tip icon on packaging
Hole in flute for easy wire pulling through walls, ceilings and floors
3-flatted shank prevents slipping in drill chuck and includes hole for wire pulling
Tapered flute for faster debris removal and smoother drillingDoes not apply to 1/4" diameter SKUs
Premium high carbon steel construction for extended drilling life in tough materials