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, 200mm size, suitable for use with 10 & Tall 12 litre cylinders with a diameter of between 170 and 200mm (6 5/8" - 7 7/8). 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.