Perfect: This two wheeled Y shaped lens frame is perfect for lens bracket systems, can bring good Good Stability: Improves balance and adds stability to your camera and lens for camera Stabilizers Adjustable: This lens frame comes with 1 / 4in slide screw that allows easy and can be adjusted to fit as need Applicable Models: Lens Systems, Stabilizers and quick release plate telephoto lens fixing Good Loading: This lens frame can a height of 22-71.5mm, with a load weight of 5kg, practical