Stanley FMMT13066-0 open end wrench

The STANLEY FATMAX 10x11 mm open end wrench is forged from chromium-vanadium steel with a satin chrome finish, designed to provide durable torque and resistance to corrosion. This double open-ended wrench features a 15° offset on each end to increase access in confined spaces and reduce knuckle contact with the work surface. The anti-slip profile improves grip on fasteners, while the compact 160 mm length and included pocket holder allow for convenient carry and quick access on job sites.

Advantages

The tool combines corrosion-resistant chrome vanadium construction with a satin finish for extended life and reliable performance. The anti-slip profile reduces slipping on nuts and bolts, while the 15° offset ends expand usable angles and create clearance for fingers and obstructions. Its lightweight 61 g body and compact size support portability without sacrificing strength.

Suitable for

• Tight or confined mechanical spaces where access is limited
• Automotive repair and maintenance tasks requiring metric wrench sizes
• Plumbing and HVAC jobs involving 10 mm and 11 mm fasteners
• General assembly, maintenance, and workshop use

Key specifications

• Material: Chromium-vanadium steel
• Finish: Satin chrome
• Wrench sizes: 10 mm and 11 mm (double open-ended)
• Offset angle: 15° on each end
• Length: 160 mm
• Weight: 61 g
• Color: Stainless steel appearance
• Carry feature: Pocket holder included

How to use

Select the appropriate end for the fastener size (10 mm or 11 mm) and position the wrench fully onto the nut or bolt to ensure maximum contact. Use steady, controlled force and apply torque in the correct direction to tighten or loosen the fastener. The 15° offset can be used to clear nearby obstructions or to reposition the wrench for additional leverage in restricted spaces. After use, wipe the wrench clean and store it in the pocket holder or toolbox to protect the finish.

Usage recommendations

Inspect the wrench periodically for wear or damage before use. Do not use the open end on rounded or severely damaged fasteners; consider switching to a suitable socket or box-end wrench. Avoid excessive impact or hammering on the tool to preserve the satin chrome finish and maintain accurate wrench jaws.