Wiha 21009 Insulated Offset Box End Wrench 9 Mm

Product Description

The WIHA 21009 is a single-end offset box end wrench sized at 9 mm with a 6-point drive profile. Built from chromium-vanadium steel, it delivers the strength and wear resistance required for repeated torque applications in industrial, electrical, and maintenance work. The insulated construction makes it suitable for work in environments where electrical hazard exposure is a factor. The offset head design provides clearance in tight fastener locations where a straight wrench cannot reach, reducing hand-knuckle contact with surrounding surfaces. Licensed electricians, industrial maintenance techs, and service professionals are the primary users of this tool.

This wrench is suited for single-fastener applications in confined spaces, panel work, equipment maintenance, and electrical installation tasks. The 6-point box end delivers full contact with fastener flats, reducing the risk of rounding hardware compared to open-end profiles. Its compact single-end format is a direct fit for 9 mm hex fasteners found on electrical enclosures, conduit fittings, switchgear hardware, and related assemblies. The non-ratcheting design keeps the mechanism simple and the head profile low-clearance.

Key Features

• 9 mm single-end offset box configuration for tight-clearance fastener access
• 6-point contact pattern reduces fastener rounding under torque
• Chromium-vanadium steel construction for durability and corrosion resistance
• Insulated design for use in electrically sensitive work environments
• Offset head geometry increases knuckle clearance over flat work surfaces
• Non-ratcheting, low-profile head keeps the tool simple and reliable

Compatibility

Designed for use with 9 mm hex fasteners in electrical, industrial, and general maintenance applications where an insulated offset box end wrench is required.

Installation Notes

This wrench is intended for use by qualified tradespeople, including licensed electricians and industrial maintenance technicians. Before beginning work on any energized or potentially energized equipment, follow all applicable lockout/tagout procedures in accordance with NFPA 70E and site safety protocols. Inspect the insulation for cracks, cuts, or damage before each use — a damaged insulated tool must not be used in electrically sensitive environments. Confirm fastener size before applying torque to avoid rounding the drive flats.