Leofoto Mini Fluid Head for Binoculars Arca Swiss Black. By twisting the handle the fluid head can be locked in place. A 50mm Q-R plate is included with the SW-01. Specifications for Leofoto SW-01 Mini Fluid Head for Binoculars: Manufacturer: Leofoto Color: Black Fabric/Material: Aluminum Accessory Attachment System: Arca Swiss Arca Last Chance: Yes Features of Leofoto SW-01 Mini Fluid Head for Binoculars Aluminum CNC Machining Package Contents: Leofoto SW-01 Mini Fluid Head for Binoculars Leofoto SW-01: SW-01 Mini Fluid Head for Binoculars Arca Swiss Black