This heavy wall tubular gauge glass is a must-have for any business or industrial setting. Measuring 5/8" x 20", this particular model is made by the trusted brand Duran. It has not been modified in any way and is not a domestic product. This gauge glass is perfect for monitoring pressure levels and other important aspects of your equipment. It is made with high-quality materials and is built to last. Whether you need it for your business or industrial operations, this gauge glass is sure to meet your needs.