Designed to drill through wood and masonry walls for installing computer, security, phone, and cable small wire systems, this 1/2' diameter, 24' long Combination Bellhanger Drill Bit from Jonard Tools eliminates the need to carry multiple drill bits with you. Perfect for any installer, this bellhanger drill bit features an aggressive tip that drills through wood, masonry, and other similar materials with ease. Holes on the bit's head and shaft allow for pulling wires after drilling. Featuring a black oxide coating and blue powder coat finish for increased rigidity, durability, and rust resistance.