James Lever & Sons are manufacturers and suppliers of high-quality endless cords for use within cord-operated window mechanisms and pulley systems.

Endless cords were a James Lever innovation dating back to the 1920s, and today we remain the sole manufacturers of this specialist product.

Supplied in continuous loop form, endless cords are designed for smooth, consistent operation in applications where controlled movement is required. They are widely specified for use in cord-operated window mechanisms and related systems.

Available in a range of diameters and loop configurations, our endless cords are supplied to meet the needs of manufacturers, installers and maintenance professionals.

Combining dependable construction with established cordage expertise, James Lever endless cords deliver consistent performance across a variety of controlled movement applications.