These are semi-rigid with a slight flex to them. These are NOT bendable.
IRWIN 1890741 7/16" Flexible Installer Drill Bit Extension 3/16" Shank, 72"
Tungsten carbide tip for extended life in brick, block and mortar joints Show 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 drilling Does not apply to 1/4" diameter SKUs
Premium high carbon steel construction for extended drilling life in tough materials
Aeronca x 15 irwin room across from lenox racks weiser
