Key Features:

• Whitworth Size Standard: Designed specifically for fasteners that follow the Whitworth standard, which is common in older British machinery and vehicles.
• Open-Ended: These spanners have an open-ended design, which allows for quick application and removal from fasteners.
• Insulated Handle: The handles are coated with an insulating material that meets safety standards, usually up to 1000V, to protect against electric shock.
• Material: Typically made from high-grade steel for durability, with the insulated coating providing both safety and a comfortable grip.

Applications:

• Electrical Work: Ideal for electrical engineers, electricians, and technicians working on live circuits or near electrical components.
• Automotive Maintenance: Useful for working on vintage vehicles, especially those that use Whitworth-sized fasteners.
• Industrial Maintenance: Applicable in industries where older British machinery is still in use.

When selecting an insulated Whitworth open-ended spanner, it's important to ensure that it meets the necessary safety standards, such as IEC 60900, which governs tools used for live working.