Klein Tools 70543 3-Piece Compact Folding Hex Key Set – 25 Keys, Metric, SAE & Torx, Heat-Treated Alloy Steel

Overview

Meet Klein Tools 70543, a compact folding hex key set that delivers professional-grade performance in a pocket-friendly form. It blends a reinforced nylon handle with a folding body for quick access, easy storage, and reliable leverage on the job.

Color coding keeps your workspace efficient: red for Inch, blue for metric, and green for Torx. A strategically placed #2 Phillips fastener on the outer body lets you fine-tune key tension to suit your preference as you work, reducing interruptions and keeping you organized on busy days.

Key features

• Portable DESIGN: Hex key is compact and pocket-sized for easy carrying and storage convenience
• 25 HEX KEY SIZES: 5/64-Inch, 3/32-Inch, 7/64-Inch, 1/8-Inch, 9/64-Inch, 5/32-Inch, 3/16-Inch, 7/32-Inch, 1/4-Inch, 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 8mm, T9, T10, T15, T20, T25, T27, T30, T40
• KEY TENSION ADJUSTMENT: Easily adjust key tightness or looseness using the convenient #2 Phillips fastener
• 270-DEGREE RANGE: Each blade opens independently to 270 degrees for work at all angles
• SQUARE CUT ENDS: Secure, full-depth fit for maximum contact with the socket, preventing slippage and stripping

What you get

• 3-piece compact folding hex key set for versatile use
• 25 total keys across SAE, metric, and Torx sizes
• Color-coded keys for quick size recognition on the job

Durability and materials

Blades are made from heat-treated alloy steel and coated to resist rust, with lengths between 2-1/4 and 2-1/2 inches. The reinforced nylon handle provides a sturdy, comfortable grip designed for daily use in professional settings.

Usage notes

Designed to support a range of fasteners in woodworking, bicycle maintenance, electronics assembly, and general mechanical tasks. While results vary by task, the set offers practical leverage, quick access, and long-lasting performance that can help streamline your workflow.