SunwayFoto IB-30 Low-Profile Inverted Ball Head with SDC-50 Duo-Lever Clamp

T6061 Aluminum Material Type III Hard-Anodizing Finish Quick Locking Knob.Resistant to abrasion and corrosionElaborately CNC machined with hard-anodizing Finish.Quick LockingBoth Screw-Knob and Lever Clamp Locking.Adjustable Clamp WidthCompatible with Arca / RRS and NATO / Picatinny Plate Structures.Anti-slip off rod can prevent clamped equipment from slipping off by strong impact or accidentally loosened clamp.Ball Diameter 1.2in./30mmLoad Capacity of 39.7lb.(18KG), Height 2.6in.(65mm) and Base Diameter of 1.6in.(40mm)Quick Tightening by Lever-lockThe ball can be swiftly locked to save time.Base 3/8" Mounting Socket1/4"-20 to 3/8"-16 bushing adapter included.SP-60 Arca QR Plate IncludedBoth 1/4"-20 and 3/8"-16 mounting screws are provided.