4MM-22MM UNI-BIT - Irwin

The Irwin 11104 4MM-22MM UNI-BIT is a professional-grade step drill bit designed for drilling precise holes across a range of applications in automotive and industrial environments. This versatile tool replaces multiple standard drill bits, offering a convenient and efficient solution for technicians and mechanics working with various materials. Engineered for durability and consistent performance, it is an essential addition to any professional toolkit.

Key Features

• High-Speed Steel Construction: Manufactured from high-speed steel (HSS), the UNI-BIT ensures exceptional durability and extended tool life, even under demanding professional use.
• Wide Hole Size Range: Drills 10 distinct hole sizes, from 4mm to 22mm in 2mm increments, all with a single bit.
• 3-Flatted Hex Shank: Features a 3/8" (10mm) hex shank with three flats to prevent slippage in drill chucks, ensuring secure operation with power tools such as drills and drivers.
• SpeedPoint Tip: The innovative SpeedPoint tip allows for rapid, self-starting penetration, eliminating the need for center punching and preventing the bit from walking on the workpiece.
• Single-Flute Cutting Edge: A single-flute cutting edge design provides greater control, reduces vibration, and produces true, round holes in thin materials.
• Durable Storage Case: Comes with a robust storage case for organized transport and protection of the bit, prolonging its lifespan and ensuring easy access.

Applications

The Irwin 11104 UNI-BIT is engineered for precision drilling in a variety of thin materials commonly encountered by professional technicians and metalworkers. It is ideal for creating clean, burr-free holes in materials such as stainless steel, copper, brass, aluminum, plastic, plexiglass, wood, and laminates. This step drill bit excels in tasks requiring the enlargement of existing holes or the creation of new ones in vehicle body panels, electrical enclosures, conduit, and other fabrication projects where a maximum material thickness of 5mm applies. Its design is particularly beneficial for custom installers and automotive repair specialists.