Titanium Coated Step Drill Bit Set for Plastic, Wood, Metal, Aluminum

The 3Pcs HSS Step Drill Bit Set is a versatile and durable tool designed for a wide range of drilling applications. Crafted from traditional HSS (High-Speed Steel) and coated with a titanium nitride finish, these step drill bits offer exceptional performance and longevity.

The set includes three drill bits, each with a unique range of step sizes:

1. Bit #1 (5 steps): 4-12mm (4mm, 6mm, 8mm, 10mm, 12mm)
2. Bit #2 (9 steps): 4-20mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm)
3. Bit #3 (15 steps): 4-32mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm, 32mm)

The unique design of these step drill bits makes them highly efficient and user-friendly. The 118° X-type split point increases cutting speed and ensures self-centering, preventing the bit from "walking" on the workpiece. The two-flute design provides a faster and smoother cutting action, allowing particles to escape easily.

Moreover, the hex shank of the drill bits is designed to prevent spinning inside the chuck, ensuring a secure and reliable grip in various drill machines. This makes the bits compatible with a wide range of power tools, allowing for versatile and effective usage.

It's important to note that these step drill bits are not suitable for use with hammer drills, as the impact could damage the cutting edge. To ensure optimal performance and extend the service life of the bits, it's recommended to oil them before each use and drill a smaller pilot hole before proceeding with the larger sizes.

Additionally, the metal material being drilled should not exceed 0.18 inches (4.5mm) in thickness. For thicker materials, it's advised to use a lower drilling speed to avoid damaging the cutting edge.

When working, it's beneficial to inject cold water onto the workpiece, as this can effectively extend the service life of the drill bits.

The 3Pcs HSS Step Drill Bit Set is suitable for use on workpieces with a hardness below 25 degrees, such as iron, copper, and aluminum plates up to 3mm (0.12 inches) thick, as well as wood, PVC sheets, and insulation boards up to 5mm (0.2 inches) thick. However, it should not be used on hard and brittle materials like stainless steel, glass, or tile floors and walls.

If you're not fully satisfied with the product for any reason, the manufacturer promises to offer their utmost sincerity in helping you resolve the issue. This commitment to customer satisfaction is a testament to the quality and reliability of the 3Pcs HSS Step Drill Bit Set.

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