NEIKO 10173A Step Drill Bit Set – Titanium Coated HSS, 5-Piece, 50 Sizes for Metal & Wood

Overview

The NEIKO 10173A Step Drill Bit Set is designed to help you tackle metal and wood drilling tasks with clarity and control. Crafted from industrial-grade high-speed steel and finished with a durable titanium nitride coating, these unibits are built to endure across sheets of metal, wood, plastic, aluminum, and copper. The two-flute spiral design feeds material away from the bore while deburring chips for a smoother, faster hole. With five bits offering a combined total of 50 step sizes, this set provides broad drilling versatility without frequent bit changes.

Key benefits at a glance

• Coated durability: Titanium nitride coating minimizes heat build-up and reduces wear for longer bit life.
• Fast, flexible changes: The quick-change 1/4-inch hex shank is compatible with most impact-ready tools for quick swaps.
• Accurate starts: The 135° split point tip self-centers, reducing wandering and delivering cleaner starts.
• Efficient drilling: The two-flute spiral clears chips as you cut, lowering friction and heat for quicker holes.
• Easy sizing: Clear engraved sizes let you identify the bore size at a glance for better planning.

What you get and the size range

The set comprises five bits with a total of 50 step sizes, spanning four drilling ranges to cover common needs:

• 1/8”–1/2” in 1/32” increments (13 steps)
• 3/16”–1/2” in 1/16” increments (6 steps)
• 3/16”–7/8” in 1/16” increments (12 steps)
• 1/4”–3/4” in 1/16” increments (9 steps)
• 1/4”–1-3/8” in 1/8” increments (10 steps)

Practical usage tips

• Ideal for projects where you need multiple hole sizes without swapping tools, such as panel work or quick-fit assemblies.
• On metal, a light touch and steady feed with appropriate lubrication can help maintain clean edges and reduce heat buildup.
• On wood or plastic, start with a smaller step to guide the larger bore for precise results.

Whether you’re building a DIY assembly or outfitting a shop with reliable bits, the NEIKO 10173A set offers versatility and durability without asserting guarantees. It’s designed to empower your workflow with more choice and fewer interruptions.