2 pcs Adapter Ring:1 x Step Down Adapter Ring & 1 x Step Up Adapter Ring
Adapter ring is suitable for filters, close-up lenses and other attachments to lenses with different filter thread sizes.
The Bower 37-52mm Step-Up Adapter Ring easily screws onto the front of any 37mm Lens, and allows you to convert to the 52mm threads of accessory items (such as filters, hoods, flashes and lens converters).
The 62mm-52mm ring adapter easily screws onto the front of any 62mm lens, and converts the thread size of your lens to the thread size of any other 52mm accessory (such as filters, hoods, flashes and lens converters).

Product Name : Step Up Adapter Ring+Step Down Adapter Ring
Male Thread : 37mm/1.45inch;Female Thread : 52mm/2inch
Size(Approx) : 54 x 6mm/2.1inchx 0.24inch(Max.DxH)
Lens Side : 62mm/ 2.4inch
Filter Side : 52mm/ 2inch;Total Size : 65 x 6.6mm/ 2.6inch x 0.27inch (DxT)
Material : Metal
Color : Black

Package Contents :
1 x Step Down Adapter Ring
1 x Step Up Adapter Ring