Type 1 7M Snorkel Hose Brand LIEYUMode For LIEYU Z270 LIEYU LY01 Scuba Diving Snorkel EquipmentFeatures Retractable poratble can be extended to 7M when conveying gasOperation Need to use with the gas tank on the picture Note Please refer to the second picture for installation the connection method on more pictures is wrong Type 2 Compressor filter cottonPackage included 1 x 7M Snorkel Hose1 x Gas tank