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Klein Tools 3.15 in. L High Speed Steel Step Drill Bit Hex Shank
Klein Tools 3.15 in. L High Speed Steel Step Drill Bit Hex Shank
Klein Tools 3.15 in. L High Speed Steel Step Drill Bit Hex Shank

Klein Tools 3.15 in. L High Speed Steel Step Drill Bit Hex Shank

Meet the Klein Tools 3.15 in. L High Speed Steel Step Drill Bit with Hex Shank—a precision, single-bit solution designed for professional results in metalworking, electrical work,…

Klein Tools MPN KTSB11
Sold Locally Only

This product isn’t sold on our website — see your local hardware store.

Typical Store Price i
Typical store price: low $46.99, average $54.99
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About Product Overview

Meet the Klein Tools 3.15 in. L High Speed Steel Step Drill Bit with Hex Shank—a precision, single-bit solution designed for professional results in metalworking, electrical work, and DIY projects. Crafted from high-speed steel, this bit is built to stand up to repeated drilling in thin metals and sheet materials while delivering clean, progressively larger holes with each pass.

Why this step drill is everything you need

  • High speed steel construction delivers exceptional wear resistance and heat tolerance, ideal for drilling soft metals, aluminum, and sheet stock without dulling quickly.
  • Hex shank for secure grip fits in standard 1/4" chucks and most impact drivers, reducing slippage and enabling faster bit changes on busy jobsites.
  • 3.15" overall length provides extended reach in tight spaces—perfect for work inside electrical panels, behind cabinets, or along thin-gauge metal where space is limited.
  • Single-piece, clamshell packaging keeps a durable, ready-to-use bit neatly organized and easy to transport on-site.
  • Versatile hole sizing—the stepped design lets you create multiple hole diameters with one tool, minimizing the need for multiple drill bits and streamlining fabrication or installation tasks.

Ideal use cases

This Klein Tools bit shines on projects that involve thin metal and sheet stock. Use it to:

  • sizing holes for electrical conduit, outlets, and switch boxes in aluminum or steel panels;
  • drilling clean, stepped holes in metal enclosures, HVAC ductwork, and thin steel cabinets;
  • creating pilot holes and enlarging holes progressively when fabricating custom housings or mounting plates.

How it helps you get better results

Compared to using multiple standard twist bits, this step drill bit reduces tool clutter and cutting steps. The progressive diameters remove material gradually, which minimizes edge burrs and produces rounder holes in soft metals. The high-speed steel formulation stands up to repeated drilling and heat buildup, giving you reliable performance across jobs that demand precision and efficiency.

Tips for best performance

  • Use light cooling/lubrication when drilling metal to extend bit life and improve hole quality.
  • Start with a smaller step to establish a clean pilot hole, then progress to larger steps as needed.
  • Keep drill speed moderate and steady to avoid overheating the bit and the workpiece.

Quality and reliability

As a Klein Tools product, this bit embodies the brand’s commitment to durable craftsmanship and practical design. It’s built for professional workflows, whether you’re a seasoned tradesperson or a dedicated DIYer tackling metal fabrication, electrical installations, or housing projects where clean, expandable holes are essential.

The Details Specifications

Brand Klein Tools
SKU 2487510
UPC 092644591112
Unit 0
Case Pack Quantity 3 per case
Retail Unit Quantity 1
Unit of Measure 0 0
Dimensions (L × W × H) 1 × 4 × 6
Weight 0 lbs
Cubic Feet 0.01833 ft³
Country of Origin THAILAND
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab

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