Features 1、​Made of high quality copper material, this burst disk is sturdy and durable. 2、Characterized by high strength and high hardness, not easy to deform. 3、Four styles for you to choose - 1.8K, 3K, 5K or 7K. 4、Lightweight and small size, easy to store and use. 5、Great accessory for tank regulator or valve. Specification This burst disk is made of high quality material. It comes with high strength and high hardness, not easy to deform. Easy to store and use, a great choice for you. Features: Made of high quality copper material, this burst disk is sturdy and durable. Characterized by high strength and high hardness, not easy to deform. Four styles for you to choose - 1.8K, 3K, 5K or 7K. Lightweight and small size, easy to store and use. Great accessory for tank regulator or valve. Specification: Condition: 100% Brand New Item Type: Burst Disk Material: Copper Type: 3/8-24UNF Size: Approx. 1 * 1 * 1cm / 0.4 * 0.4 * 0.4inch Weight: Approx. 17g / 0.6oz Package List: 3 * Burst Disk Note: Please allow 1-3mm error due to manual measurement. Thanks for your understanding. Package List