1、Multipurpose: Hose used to tie up spare secondary head, residual pressure gauge and other equipment, can also be used for other DIY purposes. 2、Premium 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. 3、Superior Quality: The rubber ring is tighter on the cylinder and can be pulled by hand to open the rubber ring. 4、Perfect Fit: Product circumference 47cm/18.5in, suitable for 11L decompression bottle. Simple installation and easy to operate. 5、Applicable: Perfect for people who like to dive or engage in underwater exploration. Fine workmanship, convenient and practical. Item Type: Diving Retainer Band Material: Rubber Size: Circumference: Approx. 47cm/18.5in 1 x Diving Retainer Band