The square Field Optics Research Arca Swiss Twist Clamp attaches directly to any 3/8"-16 thread stud, whether it be a bowl disk, trekking pole, or tripod center tube. It features two bubble levels, one for horizontal and one for vertical. The frame is 2.2 x 2.0 x .62" with a maximum width (including knob and level) of 3.6". It includes dual retention pin slots, an anti-rotation jam nut, and weighs 2.8 oz. It is made from a cast aluminum alloy. Please note that a QR plate is not included.
UPC: 675283925090