Wiha 21011 Insulated Offset Box End Wrench 11mm

Product Description

The WIHA 21011 is a single-end offset box end wrench designed for professional use in environments where electrical safety is a priority. Built from chromium-vanadium steel, this wrench delivers the strength and wear resistance required for repeated fastener engagement in tight or angled access points. The 6-point box end provides a secure grip on 11 mm fasteners, reducing the risk of rounding. The offset profile allows clearance over obstructions that a standard straight wrench cannot clear. Insulated construction makes it appropriate for work near energized components where hand tool safety standards apply.

This wrench is suited for electricians, HVAC technicians, and other trade professionals who require insulated hand tools for service and installation tasks. The single-end, offset box configuration is commonly used when fastener access is limited by surrounding structure or adjacent components. It is appropriate for both residential and light commercial applications where an 11 mm fastener is standard.

Key Features

• Insulated construction for use in electrically sensitive work environments
• Chromium-vanadium steel body for durability and corrosion resistance
• 6-point box end reduces fastener rounding compared to 12-point designs
• Offset profile provides clearance over obstructions at the fastener site
• Single-end design in 11 mm for dedicated fastener sizing
• Non-ratcheting for straightforward, reliable torque application

Compatibility

Designed as an OEM-style replacement or direct-use insulated offset box end wrench for 11 mm fasteners in residential and commercial trade applications.

Installation Notes

This wrench is intended for use by licensed electricians and qualified trade professionals working near or on electrical systems. Always verify the insulation rating of the tool is appropriate for the voltage level of the work environment before use. De-energize circuits where possible before beginning any fastener work, and follow applicable NEC guidelines for insulated tool requirements. Inspect the insulation coating for cracks or damage before each use and replace the tool if insulation integrity is compromised.