Top quality rust free 18/8 marine grade stainless steel adjustable band suitable for cylinder or battery pack attachment as well as all other applications where a strong connection is required. Strong & convenient 8mm worm drive allows precise adjustment to size, 220mm size, suitable for use with 12 Litre Short and 15 Litre cylinders as well as all other items with a diameter of between 190 and 220mm (7 1/2" - 8 5/8"). Hi-Grip bands are ideal for salt water and many other highly corrosive environments. They have Lloyd's Register Type Approval for marine, offshore and industrial use. Hi-Grip Stainless hose clips have become the industry standard for demanding applications throughout the world due to their high quality and performance.