Leofoto Binocular Adapter Black. There is an arca dovetail on the bottom which can attach to any arca compatible clamp. Specifications for Leofoto BC-04 Binocular Adapter: Manufacturer: Leofoto Color: Black Fabric/Material: Aluminum Accessory Attachment System: Arca Swiss Arca Features of Leofoto BC-04 Binocular Adapter Aluminum CNC Machining Package Contents: Leofoto BC-04 Binocular Adapter Leofoto BC-04: BC-04 Binocular Adapter Black