Efficient and User-Friendly Design: Featuring a standard connector for seamless compatibility, this adapter facilitates quick and easy connections. The hose is encased in a protective layer, enhancing its durability and extending its lifespan significantly. Simplified Operation: To use, simply connect one end to a large gas cylinder and the other to your tank. Activate the valve switch on the cylinder, and the adapter efficiently transfers the air, making refilling straightforward and hassle-free. Interface Type:1/2 Quick Insertion Measuring Range:0-4500(PSI) 60cm Microbore Hose Color:Silver & Black Material:Metal Package Contents: 1 * Air Refill Adaptor with Pressure Gauge Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.