Item Type:DivingRetainerBandMaterial: RubberSize:Circumference: Approx. 47cm/18.5in .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; } 1Multipurpose: Hose used to tie up spare secondary head, residual pressure gauge and other equipment, can also be used for other DIY purposes. 2Premium Material: The diving retainer is made of high quality high elastic rubber, strong and wear resistant, tough, long service life, lightweight and easy to use. 3Superior Quality: The rubber ring is tighter on the cylinder and can be pulled by hand to open the rubber ring. 4Perfect Fit: Product circumference 47cm/18.5in, suitable for 11L decompression bottle. Simple installation and easy to operate. 5Applicable: Perfect for people who like to dive or engage in underwater exploration. Fine workmanship, convenient and practical.