Klein Tools BLS18 Hex Key Wrench Set – Color-Coded SAE & Metric, Long Arm, Ball End, 18-Piece

Overview

The Klein Tools BLS18 hex key wrench set brings together 18 popular SAE and metric sizes in one compact, color coded caddy. Designed for professional use, it emphasizes extended reach, comfortable handling, and precise engagement across angled work, helping you tackle fasteners with confidence.

What’s Included and How It Supports Your Workflow

With nine SAE and nine metric sizes, this set covers the most common fasteners you’ll encounter on the job. The color coded sleeve makes it fast to identify the correct size at a glance, reducing search time and keeping your workflow efficient on busy days.

• SAE: 7/64, 1/8, 9/64, 5/32, 3/16, 7/32, 1/4, 5/16, 3/8 in
• Metric: 1.5, 2, 2.5, 3, 4, 5, 6, 8, 10 mm

Design, Comfort and Angled Access

The set features extra-long arms that deliver up to 30 percent more reach, helping you engage fasteners that sit at awkward angles. Round shanks with a plastic sleeve provide a more comfortable grip during longer sessions. The ball-end hex keys are optimized for use at angles up to 25 degrees, enabling smoother operation in tight corners and nooks.

• Extra-long arms enhance leverage in tight spaces
• Plastic sleeves improve grip comfort during extended work
• Ball-end keys accommodate angled access up to 25 degrees

Durability, Heritage and Use Cases

Klein Tools is an American, family-owned manufacturer with six generations of engineering know-how. The BLS18 set combines heat-treated steel with precise tolerances for dependable performance over time, even in demanding environments.

In practice, this kit shines from automotive maintenance and appliance service to cabinetry and general maintenance tasks where multiple fastener sizes appear. The included compact caddy keeps the collection organized and portable between sites.

Care and Practical Details

All 18 keys are heat-treated for hardness and longevity. To extend tool life, wipe clean after use and store in the provided caddy sleeve to prevent loss. This setup supports quick access, organization, and consistent performance at the workbench or on-site.

Why Choose Klein Tools

Rooted in a long-standing tradition of professional-grade hand tools, Klein Tools combines quality materials, thoughtful design, and manufacturing care to deliver tools that help professionals get the job done with precision and reliability.