Im not sure if they are used or unused. They are not in a box so listing as used.

The SWAGELOK 6000PSI Pressure Gauge is a high-quality hydraulics and pneumatics tool designed for industrial use. With a maximum pressure capacity of 6000PSI and a 1/4 inch connection diameter, it is ideal for monitoring and measuring air pressure accurately. Made by the reputable brand SWAGELOK in the United States, this pressure gauge is reliable and built to last. Its back mount design allows for easy installation and maintenance, making it a valuable asset for businesses and professionals in the plumbing and pump industry.