SUNWAYFOTO brand Low Profile Head with Arca / RRS Compatible Duo Lever Screw Clamp ^^ Accepts QR's from RRS Wimberley, Jobu, Arca Swiss, Kirk, Markins, etc.
^^ Max load: 30KG/66lb ^^ Clamp Features Both Lever and Screw Knob Releases ^^ Low Center of Gravity ^^ Elliptical Ball for progressive resistance ^^ Height96mm/ 3.8 in. Net Weight629g/ 1.2 lb ^^
Ball Diameter: 60mm,
Base Diameter: 62mm ^^ 3/8" Socket with 1/4" Bushing Adapter ^^ Includes 3
QR Plates: Arca SP-60, Picatinny NP-60N and MLOK SMP-80.