This lock spring ("Wiper boss lock spring") is developed specifically to lock and secure the wiper boss in the Berson UV system. It ensures the wiper assembly remains firmly attached during operation, and prevents parts from coming loose or shifting under vibration and movement. The spring is produced from a robust material with high elasticity, delivering a long service life. Key benefits: Purpose-built for the Berson UV system. Holds the wiper boss stable during operation. Robust, durable construction. Simple to install. Please contact us if you are unsure whether this lock spring fits your UV system.