Gray Tools
Gray Tools T4-I 3/8" Drive Insulated Extension 6" 1000V
A 3/8" drive insulated extension providing 1000 V protection with dual-colour safety layers and ASTM F1505 testing
- ColorTransparent
- 1000 V user protection from individually tested insulation
- ASTM F1505 compliance confirms electrical safety rating
- Dual orange and yellow layers give visual wear indication
- Spring-loaded ball secures socket during live work
- 6-inch reach keeps hands clear of energised parts
3/8" Drive 1000V Insulated Extension
This 6-inch insulated extension fits 3/8-inch drive sockets and is rated for work up to 1000 volts. It is built for electricians and technicians who need verified protection on live or potentially live circuits. The tool meets ASTM F1505 test requirements and carries the required California Proposition 65 notices.
Replaces uninsulated extensions on voltage-rated
Standard chrome extensions must be swapped out whenever the task demands 1000 V protection. The dual-layer insulation — orange over yellow — adds a visible safety indicator; if the yellow layer shows, the extension should be removed from service. The upgrade is worth it whenever insulated hand tools are specified by procedure or regulation.
Dual-layer insulation under sustained electrical
The orange outer layer and yellow inner layer are individually tested to ASTM F1505, so the dielectric barrier remains effective during prolonged contact with rated voltage. A spring-loaded ball retains the socket securely while the insulation system maintains its protective thickness. The visual indicator layer lets the user confirm integrity before each use without relying on a short-duration test alone.
Highlights
- 1000 V user protection from individually tested insulation
- ASTM F1505 compliance confirms electrical safety rating
- Dual orange and yellow layers give visual wear indication
- Spring-loaded ball secures socket during live work
- 6-inch reach keeps hands clear of energised parts
Specifications
| Brand | GRAY TOOLS |
|---|---|
| Color | Transparent |
Questions about this item
What drive size and length does this extension require to fit my 3/8" ratchet?
It has a 3/8" drive size and is 6" long, matching standard 3/8" sockets and ratchets.
How do I install it so the spring-loaded ball locks positively onto the socket?
Push the extension onto the ratchet anvil until the ball seats in the groove, then press the socket onto the extension until the ball clicks into the socket recess.
When should I replace the extension based on the dual-layer insulation?
Replace it if the orange outer layer is damaged enough to show the yellow inner layer, as the yellow layer is the visual safety indicator.
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