The 37mm-30mm ring adapter easily screws onto the front of any 37mm lens, and converts the thread size of your lens to the thread size of any other 30mm accessory (such as filters, hoods and lens converters).

Features:
1. Your lens thread size will be printed on the underside of the lens cap or written on the lens barrel.
2. It can avoid wobbling or cross-threading, and the ultra-thin design makes it durable and practical.
3. Aluminum alloy, high strength, impact resistance, twisting and compression resistance.

Material: Metal
Lens Side: 37mm/ 1.5"
Filter Side: 30mm/ 1.2"
Total Size(D*T): 40 x 6.6mm/ 1.6" x 0.26"
Color: Black
Package Content: 1 x Adapter Ring