Features:The ring adapter set includes 9pcs set-up rings and 9pcs set-down rings.If the first number is bigger￡? it's a step-down ring. If the first number is smaller￡? it's a step-up.The set-up ring converts the thread size of your lens to the thread size of any other accessory (such as filters￡? hoods￡? flashes and lens converters).The set-down ring converts the thread size of your accessories to the thread size of any other lens.Extremely solid and lightweight. Specifically designed for your camera for a tight and secure fit. Made of high quality anodized black aluminum (metal).A must have accessory to unlock the full potential of your camera! Specifications:Material: Aluminium alloyColor: BlackPackage weight: 130g / 4.6ozPackage List:1 * 37mm-49mm Step-up ring1 * 49mm-52mm Step-up ring 1 * 52mm-55mm Step-up ring 1 * 55mm-58mm Step-up ring 1 * 58MM-62mm Step-up ring 1 * 62mm-67mm Step-up ring 1 * 67mm-72mm Step-up ring 1 * 72mm-77mm Step-up ring 1 * 77mm-82mm Step-up ring 1 * 49mm-37mm Step-down ring 1 * 52mm-49mm Step-down ring 1 * 55mm-52mm Step-down ring 1 * 58mm-55mm Step-down ring 1 * 62mm-58mm Step-down ring 1 * 67mm-62mm Step-down ring1 * 72mm-67mm Step-down ring1 * 77mm-72mm Step-down ring1 * 82mm-77mm Step-down ring"
