EB-52 52mm Tripod Ball Head with Arca Swiss Plate for DSLR,Load 66lb/30kg,Epic Series Traveller BallheadModel: EB 52 MaterialT6061 Aluminum FinishHard Anodized Ball Diameter 52mm 2in Height109mm 4. 3in Net Weight532g 1. 2lb Load Capacity30KG 66lb Base Diameter70mm 2. 8in Base Thread SocketUNC3 8" 16 QR PlateDP 60G Compared with traditional ballheads, EB 52 is designed without neck to provide the head with even lower center of gravity hence ensuring much better stability when it's loaded with cameras or rifles. Adjust and set appropriate friction