Klein Tools 70591 Folding Hex Key Set SAE
- 9 hex keys, 5/64 to 1/4 inch
- SAE sizes, with millimeter equivalents listed
- 5.5 inches long, folds into a handle
- 0.49 pounds
- 1 year manufacturer warranty
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A folding hex key set in SAE sizes that stays together in one handle and hangs from a hole. It is a hand tool with no ratcheting, so turning speed depends on you.
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ASIN: B0002RI8RSModel: 70591Category: Wrenches
Overview
A workshop wall hook or tool bag pocket is where a folding set like this lives. The nine keys swing out from a single handle, and a hang hole on the end lets you store it on a peg.
One handle replaces nine loose keys, so nothing gets lost and any size is a flip away. The drawback is speed, since there is no ratcheting action and the keys are short.
Who it's for
Toolbox owners working on bikes, furniture and equipment with inch sized hex screws. Those who need non-sparking tools or a ratcheting driver should look at a different tool, and users of metric-only hardware should check the millimeter equivalents first.
Pros and cons
- Nine sizes in one handle
- Hang hole for storage
- SAE sizes with metric equivalents
- Manufacturer warranty listed
- No ratcheting action
- Folding keys can pinch fingers
Performance notes
Each key folds out and locks against the handle, which gives a lever for turning fasteners. Short keys reach shallow sockets easily but limit leverage on tight screws. Using the right size key avoids rounding the hex socket.
Specifications
| Brand | Klein |
|---|---|
| Model | 70591 |
| Dimensions & fit | |
| Item Length | 5.5 incheslower than 69% of 338 wrenches |
| Item weight | 0.49 pounds |
| Wrench Length Style | standard |
| Construction & materials | |
| Finish Types | Brushed |
| Color | Silver |
| Material Type | Blend |
| Included components | |
| Number Of Pieces | 9 |
| Included Components | 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 3/16, 7/32, 1/4 inch |
| Unit Count | 1.0 Count |
| Warranty & support | |
| Manufacturer Warranty Description | 1 year manufacturer |
| Other details | |
| Measurement Standard | SAE (inch) |
| End Style | Hang hole |
| Is Racheting | No |
| Is Non Sparking | No |
| Head Style | Box End, Fixed Square |
| Operation Mode | Mechanical |
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Frequently asked questions
Is the Klein Tools 70591 a ratcheting hex key set?
No. The listing says it is not ratcheting, so every turn is by hand.
Which sizes are in the Klein Tools 70591 set?
The set lists 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 3/16, 7/32 and 1/4 inch keys, with millimeter equivalents given.
Can I use the Klein Tools 70591 for metric hex screws?
It is an SAE set. The millimeter figures in the listing are equivalents, so metric screws may not fit exactly.
How do I store the Klein Tools 70591?
The end has a hang hole, so it can hang from a hook or peg.