Klein Tools KT223X4-INS Lineman's 4-in-1 Box Wrench
- Jaw Capacity: 0.7 inches
- Measurement Standard: SAE (Inch)
- Head Style: Box End
- End Style: Hang Hole
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
Electricians needing a 3/4 inch insulated wrench have a solid candidate here, provided the voltage rating checks out for the job before relying on it near live circuits.
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ASIN: B006FXPYK2Model: KT223X4-INSCategory: Wrenches
Overview
Klein's insulated tool line includes this KT223X4-INS wrench, a 3/4 inch combination tool built for work near energized equipment. It measures 9 inches long and weighs 11.2 oz, marking it for electrical rather than general mechanical service.
Klein sells this insulated line specifically for electricians who need tools rated for work around energized equipment, distinct from its standard uninsulated wrenches. The listing confirms the 3/4 inch opening and insulated build but does not state a specific voltage rating, so electricians should verify certification against their job requirements before relying on it near live circuits.
- 0.75 inch (3/4 inch) capacity
- 9 inch length
- 11.2 oz weight
- Insulated (INS) design for electrical work
Who it's for
Electricians and technicians who need an insulated 3/4 inch wrench for work near energized panels or equipment. Not the right pick for general mechanics who just need a standard uninsulated combination wrench.
Pros and cons
- 3/4 inch capacity suits common electrical hardware
- Lighter 11.2 oz weight for a tool bag
- Specific voltage rating not stated in the listing
- Single size only
Performance notes
At 9 inches, it offers reasonable leverage for a 3/4 inch fastener, and the 11.2 oz weight keeps it manageable in a tool bag alongside other insulated pieces. The exact voltage rating and certification standard are not stated in this listing.
Specifications
| Brand | Klein |
|---|---|
| Model | KT223X4-INS |
| Dimensions & fit | |
| Item Length | 9 incheshigher than 51% of 371 wrenches |
| Wrench Length Style | Standard |
| Item Weight | 0.7 poundslower than 70% of 356 wrenches |
| Capacity & performance | |
| Jaw Capacity | 0.7 incheslower than 50% of 165 wrenches |
| Power & efficiency | |
| Voltage | 1000 volts |
| Construction & materials | |
| Material Type | Blend |
| Color | Transparent |
| Finish Types | Painted |
| Included components | |
| Package Quantity | 1 |
| Unit Count | 1 |
| Included Components | Lineman's Insulating 4-in-1 Box Wrench |
| Warranty & support | |
| Manufacturer Warranty Description | 1 year manufacturer |
| Other details | |
| Measurement Standard | SAE (Inch) |
| Head Style | Box End |
| End Style | Hang Hole |
| Operation Mode | Mechanical |
| Is Racheting | Yes |
| Is Non Sparking | Yes |
| Point Count | 12 |
| Item Type Name | Box Wrench |
Closest rivals on specs
Performance Tool W1173 SAE and Metric Socket Set 40 Piece- Item Weight 0.7 vs 0.85 pounds (-18%)
Frequently asked questions
What size does the Klein KT223X4-INS fit?
It has a 3/4 inch opening.
What does INS mean on this Klein wrench?
It marks the wrench as part of Klein's insulated line, built for use near energized electrical equipment.
Does the listing state a voltage rating?
No, the attribute data confirms the insulated design and 3/4 inch capacity but not a specific voltage certification.