Body Material：T6061 Aluminum Color：Black Ball Diameter ：60mm/2.4in Height：96mm/3.8in Net Weight：629g/1.2lb Load Capacity：30KG/66lb Base Diameter：62mm/2.4in Base Thread Socket：UNC3/8"-16 ✪T6061 grade aluminum main body, elaborately CNC machined with hard-anodized finish making it durable and resistant to abrasion and corrosion. Lower gravity center compared with traditonal ballheads,which lowers the whole gravity of your shooting equipment hence ensures better stability. Both the screw-knob and lever-lock can be used for tightening, which also provides better compatibility of different QR plates as well as quick-locking. Clamp width can be fine tuned to work with different Arca QR plates.Anti-slip block effectively avoids dropping of the loaded equipment under power shock. Adjust and set appropriate friction according to equpiment weight to ensure safety and quicker photo composition Includes Arca Quick Release Plate SP-60, Picatinny Arca Adapter NP-60N and MLOK Arca Quick Release Plate SMP-80.