The Milton 1/2" NPT Male G-Style Coupler is a durable and reliable tool for connecting air tools. It features steel plugs with a case hardening for added strength and durability and a steel plate for added protection. This coupler is rated for up to 300 psi of maximum pressure and 99 standard cubic feet per minute of airflow. It can handle temperatures up to 250 °F, making it suitable for various applications. FleetPride is your First Click in Heavy Duty®.