sourcingmap Aluminum 30mm 37mm Camera Step Up Filter Adapter Ring, Lens Male Female Stepping Ring for Digital DSLR SLR Camera, Black

Versatile Adaptation: Aluminum Step Up Ring allows you to screw it to any 30mm lens and convert to 37mm threads of filters, hoods, flashes and lens converters, etc. Easy to Use: Installation and removal is as simple as screwing the threaded portion of this adapter ring onto the front of the 30mm lens and then screwing the 37mm filter into the adapter ring. No additional tools or steps are required High Quality Material: The adapter ring is made of high quality metal for durability and stability. Finely machined and black coated for a smooth and scratch-resistant surface, it protects camera lenses and filters How to Use: The first number refers to the lens thread size and the second number refers to the filter size. Easily screw the adapter rings onto the front of the lens and they will be tightly secured to the lens Convenient Step Up Adapter: Use the Enlargement Filter Adapter Ring to easily mount larger filters onto lenses with smaller thread sizes. This 30mm-37mm Step Up Filter Ring is really a very useful and helpful gear for you