Description: Material:The scuba diving equipment set is made of premium material, ensuring its durability.Full Set of Diving Donut Wing Single TankComes with 30lbs Donut, Outer Shell, colorectal tube, K type oral inflator and low pressure hose,it is very convenient for you.Easy to UseRemovable soft bracket is provided for cylinder support and 4 threading slots in the middle are convenient for using.Fits for DivingGreat Scuba Dive Tech Equipment, Provides you with good buoyancy control while you are Scuba Diving and Snorkeling.Versatile Design: This scuba diving set features woven belt slots and comes with a soft harness that allows you to switch between soft and hard carrying options easily. Specification: Material:Inner Shell: 420D TPU Coated ClothOuter Shell: 1050D CorduraConnector: TPUAir Eye:Copper NickelColorectal Tube: Rubber Size Chart: Donut: When not inflated 64cmx 43cm/25.2inch x 16.93inch;When inflating 64cm x 38cmx13.5cm/25.2inch x 14.96inchx5.31inch;Low Pressure Hose Length: 55cm/21.65inchRubber Colorectal Tube Length: 30cm/11.81inchThreading Slot: 13cm x 0.7cm/5.12inch x 0.28inch Package Includes: 1 Scuba Diving Donut Wing Single Tank 30lbs1 Low Pressure Hose1 Rubber Colorectal Tube4 Threading Slots1 K Type Oral Inflator Note: Please allow slightly errors 1-2cm differences due to manual measurement.