Ideal for electricians, plumbers, and craft enthusiasts, this tool helper professionals in demanding tasks like plumbing repairs, offering enhanced grip and reduced slippage for efficient workflow Perfect for scenarios such as water pipe repairing, reaming, woodworking, and soft metal drilling in homes renovations, furniture assembly, or industrial projects, ensuring versatility across applications Designed with a three flute helical structure and a 6.35mm hexagonal shank, these bits ensures stable gripping and water pipe expansion from 15~31mm, made from sturdy alloy for accurate punching in various materials This 3 pack hexagonal helical countersink drill bit set features a shank that triples lifespans and boosts cutting efficiency, solving slow drilling with its hardness and high speed steel construction for efficient The built in tip minimizes wobble for accurate starts, while compatibility with most drills enhances and speed, making it a must have for any drilling set requiring accuracy and durability, Manufacturer: Zxfdsfdbnm