Leofoto STB-75 Rapid Lock 30mm Ball Head uses Leofoto LSC-50 Dual Clamp, to use both Arca and Picatinny and features the QR release.
Same as the head of ST series tripods for use with rifles and heavy cameras while maintaining a low centre of gravity.
Can be used with a 75mm bowel on Summit, Mountain or Rifile Inverted Series.