* Made of high-quality aluminum, strong and lightweight.
* Safe Screw installed on both sides to prevent drop of the camera by accident.
* A grooved rubber pad provides traction.
* You can change the location of the screw to fit different cameras.
* Suitable for most ball heads.
* Compatible with all Arca-Swiss standard quick release plates, including Benro / Arca Swiss / Acratech / Kirk / Wimberley / Gitzo / Manfrotto, etc.
1/4″ (the screw size that connecting the QR plate and camera)