Folding Hex Key Set 7-Key Metric - Compact Pocket Tool

In this review the Klein Tools 70582 Folding Hex Key Set is evaluated as a compact, professional-grade multi-tool for technicians who need reliable metric hex sizes on the job. The bottom line: it is for electricians, maintenance techs, and DIYers who value build quality and portability; the single biggest reason to buy is the folding design that keeps seven square-cut hex keys together and ready to use without losing individual keys. The review focuses on real-world fit, durability, and usefulness of the included metric sizes.

Key Features

• Folding design: The set folds together into a compact unit that fits easily in a pocket or tool bag, helping prevent lost keys.
• Two key positions: Each hex key locks either straight-out or at a right angle, giving extra leverage and access in tight spots.
• Square-cut hex ends: The square-cut ends deliver a full-depth fit into hex sockets to reduce slippage and minimize stripping.
• Metric coverage: Includes seven commonly used sizes from 1-1/2 mm to 6 mm, covering many everyday fasteners without extra tools.
• Durable construction: Built to withstand regular trade use, the set shows heavy-duty construction that customers report will last a long time.

Who It's For

The Klein folding hex set is best suited to electricians, maintenance workers, and tradespeople who need a compact, reliable metric set that stays together in a bag or pocket. The included sizes make it especially practical for door hardware, small appliances, and most common metric fasteners encountered on service calls.

Those who should look elsewhere include users who need an imperial set, very large industrial hex sizes, or a single high-torque dedicated L-key; this folding kit is optimized for portability and common metric range rather than extreme torque or specialized sizes.

Pros & Cons

Pros

• Compact folding design prevents lost keys and is easy to carry in a pocket or electrician's bag.
• Square-cut hex ends provide secure, full-depth engagement to reduce slippage and stripping.
• Two-position keys let users choose straight or right-angle leverage for awkward access.
• Good value and build quality for the price, with customers noting durable construction.

Cons

• Limited to metric sizes 1-1/2 mm through 6 mm, so it does not replace larger or imperial sets.

Specifications

Brand	KLEIN TOOLS
Model	70582 Folding Hex Key Set
Key count	7 keys per pack
Included sizes	1-1/2 mm, 2 mm, 2-1/2 mm, 3 mm, 4 mm, 5 mm, 6 mm
Key positions	Straight-out or right angle
Hex end type	Square-cut for full-depth fit

Our Verdict

The Klein Tools 70582 Folding Hex Key Set is a smart choice for professionals and serious DIYers who need a compact, durable, metric folding set that resists loss and delivers secure socket engagement. Its mix of sizes, two-position leverage, and solid construction make it good value for field work, while users needing imperial sizes or very large keys should add a supplemental set.

Frequently Asked Questions

Are these keys suitable for professional use?
Yes. The set's heavy-duty construction and square-cut ends provide the durability and secure fit professionals expect.

What metric sizes are included?
The pack includes 1-1/2 mm, 2 mm, 2-1/2 mm, 3 mm, 4 mm, 5 mm and 6 mm keys.

Can the keys be used at right angles for extra leverage?
Yes. Each key locks in either a straight-out or right-angle position to increase torque and access tight spaces.