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Orange insulated combination wrench with yellow safety layer, 13/16 inch 12-point head

Gray Tools

Gray Tools 166SB-I 13/16" 12 Point Insulated Combination Wrench

SKU CH-BDGM-SX5YD

12-point insulated combination wrench fits 13/16 inch hex and protects to 1000 V with dual-layer safety indication

  • 12-point drive grips fasteners securely
  • 13/16 inch hex fits common automotive bolts
  • Dual orange and yellow insulation layers show wear at a glance
  • Tested to ASTM F1505 for 1000 V protection
  • California Proposition 65 warning applies to this product

Insulated Combination Wrench 13/16 Inch

This Gray Tools 166SB-I combination wrench provides a 13/16 inch 12 point opening for fastener work. It features dual-layer insulation with an orange outer layer and a yellow inner layer that acts as a visual safety indicator. The tool is individually tested to ASTM F1505 standards for protection up to 1000 V. It carries a California Proposition 65 warning for cancer and reproductive harm.

Electricians and High Voltage Technicians

This wrench suits professionals performing maintenance on live electrical equipment up to 1000 V where insulated hand tools are required. The 12 point drive offers multiple engagement angles on compatible fasteners. Workers needing different hex sizes or drive configurations should look at other options. Buyers seeking non-insulated tools for general mechanical work will not need this specific safety rating.

Sustained Insulation Integrity

The dual-layer construction maintains its dielectric properties during extended use in rated environments. The yellow indicator layer reveals underlying wear or damage before the outer orange layer is compromised, allowing continuous safety verification. Individual testing to ASTM F1505 confirms each unit meets the standard before deployment. The insulation system is designed to remain effective throughout the tool's service life under normal operating conditions.

Highlights

  • 12-point drive grips fasteners securely
  • 13/16 inch hex fits common automotive bolts
  • Dual orange and yellow insulation layers show wear at a glance
  • Tested to ASTM F1505 for 1000 V protection
  • California Proposition 65 warning applies to this product

Specifications

BrandGRAY TOOLS

Questions about this item

Does the 166SB-I 13/16" insulated wrench need a specific socket or ratchet to operate?

No, it is a standalone combination wrench with a 12 point box end and open end; no separate drive tool is required.

Can I keep using my standard non-insulated wrenches alongside this 1000 V rated 12 point model?

Yes, but only the insulated wrench provides protection up to 1000 V; standard wrenches must not be used on live circuits.

How do I verify the 166SB-I wrench is still safe after the first job?

Inspect the orange outer and yellow inner insulation layers; if the yellow layer is visible, the insulation is compromised and the wrench must be replaced.

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