SEDIANAS 5PCS Titanium Step Drill Bit Set – 50 Sizes (3/16 to 1-3/8), HSS Titanium Coating, Dual Spiral Flutes

Overview

Meet the Sedianas 5PCS Titanium Step Drill Bit set, a compact kit designed to tackle metalwork and more with confidence. The bits are built for durability and precise control, balancing tactile feedback with clean hole results that feel smooth to the touch as you work your material of choice.

Key features

• HSS step drill with titanium coating for longer life and improved resistance to heat and corrosion
• 118 degree split point tip and a spiral dual flute design for self centering and faster chip clearance
• 50 sizes in a compact 5 piece kit, covering a wide range from 3/16 to 1-3/8
• Widely applicable to plastic, aluminum, iron and many sheet metals; not recommended for stainless steel
• Two spiral flutes enhance cutting speed and keep holes clean by evacuating chips efficiently

Real world use and comfort

Whether you are installing electrical goosenecks, fabricating aluminum brackets, or enlarging plastic enclosures, these bits are designed for steady, controlled drilling. The titanium coating reduces heat buildup during long sessions, while the self centering tip minimizes wandering on soft materials. The 50 size options let you start with a precise diameter and progress through progressively larger holes without changing tools.

• Drill walls, panels, and enclosures in metal and non ferrous materials with less effort
• Achieve crisp, round holes in aluminum dashboards or plastic housings
• Great for DIY projects and professional tasks alike, with versatile size choices

What this set is ideal for

• Metal sheet work and light fabrication
• Plastic and aluminum drilling in hobby or workshop settings
• Electrical enclosures, dashboards, and control panels

Care and tips

Keep the cutting edges cool with light lubrication and avoid excessive force. Use proper clamps and start with a smaller pilot hole if needed. Store the bits in a dry place to preserve the titanium coating. These bits are compatible with standard drill chucks and common DIY tools, making them a practical upgrade for a wide range of tasks.