Adapter ring is suitable for filters, close-up lenses and other attachments to lenses with different filter thread sizes. The Bower 40.5-55mm Step-Up Adapter Ring easily screws onto the front of any 40.5mm Lens, and allows you to convert to the 55mm threads of accessory items (such as filters, hoods and lens converters).

Features:
1. Made of black anodized aluminum alloy, durable, strong and lightweight.
2. The "Ø" (diameter) symbol will be marked somewhere on the lens barrel. Example: Ø40.5 = 40.5 mm lens thread size
3. Aluminum and good build quality make the filter threads easy to screw in.

Product Name: Step Up Adapter Ring
Material: Metal
Male Thread: 40.5mm/1.59"
Female Thread: 55mm/2.16"
Size(Max.D*H): 57 x 6mm/2.24"x 0.24"
Color: Black
Weight: 7g
Package Content: 1 x Step Up Adapter Ring