This 72-77mm Metal Step "UP" Ring Lens Adapter is a versatile accessory for photographers looking to attach a 77mm filter to a 72mm lens. With a manufacturer warranty of 1 year and a durable construction, this step-up ring ensures compatibility and reliability. Designed with a simple yet effective concept, this unbranded/generic product is a practical addition to any photography gear collection. Made in China, this unit is a must-have for those needing to upgrade their lens configuration.