AWTOOLS AW SPIRAL STEP DRILL BIT M2-TiAlN Set of 3 pcs

For professionals who need to create clean, precise holes in thin materials without constantly swapping bits, this AWTOOLS spiral step drill set offers a practical solution. The three bits cover a combined diameter range from 4 mm to 32 mm, allowing you to drill, deburr, and ream in one operation. Each bit is made from M2 high-speed steel and features a TiAlN coating that provides high heat resistance and extended tool life. The spiral flute design ensures efficient chip evacuation, while the hexagonal shank prevents slipping in the drill chuck. A storage case keeps the set organized and protected.

Highlights

• Set of 3 step drill bits with spiral flutes for smooth cutting
• M2 high-speed steel with TiAlN coating for durability and heat resistance
• Diameter ranges: 4-12 mm, 4-20 mm, and 4-32 mm
• Hexagonal 1/4 inch shank for secure grip in standard chucks
• Suitable for metal, plastic, wood, and thin sheet metal
• Includes storage case for convenient transport and organization

In daily use

Step drill bits are ideal for electricians, plumbers, and metalworkers who frequently drill into sheet metal, plastic panels, or thin wood. The stepped design lets you enlarge an existing hole to the exact size needed without changing tools. The TiAlN coating reduces friction and heat buildup, which helps prevent work hardening in stainless steel and extends the life of the bit. The spiral flutes pull chips away from the cutting edge, resulting in cleaner holes and less binding. The hexagonal shank fits both quick-change chucks and standard three-jaw chucks, providing versatility across different drills.

Full specifications

• Product type: Step drill bit set
• Number of pieces: 3
• Material: High-speed steel (HSS) M2
• Coating: Titanium Aluminum Nitride (TiAlN)
• Shank type: Hexagonal
• Shank size: 1/4 inch (6.35 mm)
• Flute type: Spiral
• Bit 1 diameter range: 4-12 mm, 9 steps, 1 mm increments
• Bit 2 diameter range: 4-20 mm, 9 steps, 2 mm increments
• Bit 3 diameter range: 4-32 mm, 15 steps, 2 mm increments
• Recommended materials: Metal, plastic, wood, thin sheet metal
• Applications: Drilling, deburring, reaming
• Heat resistance: High
• Packaging: Storage case

Final note

With three different step ranges in one set, you can handle a wide variety of hole sizes without switching to traditional twist drills. The TiAlN coating and M2 steel provide a balance of hardness and toughness, making this set a reliable addition to any workshop.