Description: These BCD airway inflator hose pipes made of high quality rubber material, flexible, corrosion resistant and soft, the BC elbow connector made of premium nylon material, very durable for using Designed for BCD inflation, deflation and float adjusting airway The 16 inch Corrugated hose fits for 30lb backplate donut wing and 19 inch fits for 50lb/65lbs double cylinders backplate donut wings The 1 inch inner diameter 16 inch long hose fits for 30lb BCD wing or jacket BCD; 19 inch fits 50lb/65lbs double BCD wing and jacket BCD The 3/4 inch inner diameter 14 inch hose fits for XS-S jacket BC, 16inch for M-L jacket BC and 18 inch for XL-XXL jacket BC Specification: Material: Rubber, Nylon Size: 14'', 16'', 18'', 19'' Package Includes: 1 Piece Hose