Metal Adjustable Tripod Mount Ring
Brand new and high quality
This tripod mount ring will help you to balance your lens which is heavy or long lens hanging off the front of your camera.
It is anti-rust and water-proof.
There's a standard 1/4'' screw in the bottom to fit a variety of tripod, light stand adapters and flash mounts etc.
Hasselblad lens to (D)SLR camera adapter without tripod