Stanley FATMAX FMMT13068-0 open end wrench

STANLEY 14×15 mm anti-slip flat open-end wrench is a single-piece hand tool designed for turning hexagonal and square nuts and bolts with parallel flat jaws. The wrench features two open ends in 14 mm and 15 mm sizes, a slim profile for access in confined spaces, and an anti-slip finish that improves grip during manual operation. It is suited for mechanical, automotive and general household repair tasks where controlled torque and precise engagement with fasteners are required.

Advantages

The anti-slip finish reduces slipping and helps minimise rounding of fasteners while you apply force. Dual-size open ends eliminate the need to carry two separate wrenches for the most common close-size fasteners. The slim, flat profile provides access to tight locations and makes the wrench easy to position on fasteners without obstructing adjacent components. Manufactured by an established brand, the tool is dimensioned for reliable fit and consistent leverage.

Suitable for

• Automotive maintenance and light repairs
• Mechanical assembly and disassembly of equipment
• Household plumbing and furniture assembly
• DIY projects requiring accurate manual torque

Key specifications

• Open-end sizes: 14 mm and 15 mm
• Type: flat open-end wrench with two fixed jaws
• Finish: anti-slip surface treatment for improved grip
• Construction: single-piece metal design with slim profile
• Typical use: manual turning of nuts and bolts

How to use

Select the appropriate open-end size (14 mm or 15 mm) that matches the nut or bolt. Position the wrench so its flat jaws fully seat on the fastener flats, ensuring full contact to avoid slipping. Apply steady manual force, pulling the handle toward you or pushing away from you depending on clearance and desired torque. For tight fasteners, work incrementally and reposition the wrench as needed; avoid using extension bars or cheater pipes on this type of wrench to prevent tool damage and loss of control.

Usage recommendations

Inspect the wrench before use for wear or deformations that could reduce contact with fasteners. Keep the anti-slip finish clean and free of oil or grease to maintain grip. For stubborn or rusted fasteners, consider applying penetrating lubricant and use appropriate-size hand or socket tools designed for higher torque to avoid damaging the open-end jaws.