 " Manfrotto 501PLONG Video Long Rapid Connect Mounting Plate "@en - Optics4Birding
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                            The Manfrotto 501PLONG rapid connect plate fits 501HDV and 701HDV video heads and extends the ability to balance cameras and spotting scopes.
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 "Manfrotto Hydrostatic Ball Head With Rc4 Rapid Connect Plate (410Pl) 468MGRC4"@en 468MGRC4 - Filmtools"@en
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Advanced ball head
Independent pan and tilt locks
360 pan 
90 / -90 tilt movement 
Magnesium die cast body
2" Teflon coated aluminum ball 
1/4'' screw and 3/8'' screw attachment type
Load capacity: 35.27 lbs
RC4 Rapid Connect Plate
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