For sidmounting cylinders Contents AP73 - Stage Cylinder Band Kit  Available in 3 sizes: AP73/4/4.5 - fits 4\" to 4.5\" (102mm to 114mm) diameter cylinders AP73/5.5 - fits 5.5\" (140mm) diameter cylinders AP73/7 - fits 7\" (178mm) diameter cylinders Please measure your cylinders to ensure correct size 2 and 3 litre cylinders = 4\" to 4.5\" diam 5 and 7 litre cylinders = 5.5\" diam 10 litre and 12 litre cylinders = 7\" diam Includes 2 x AP85A Brass Bolt Snap Hooks [cylinder shown not included]