 "Manfrotto 502HD Long Quick Release Plate 504PLONG" " Manfrotto 504PLONG For sale! - EuroOptic.com
"This Manfrotto Long Quick Release video camera plate fits 502HD, is made from black aluminum, and has a length of 50cm." 
 "Manfrotto 504 Camera Plate Long"@en Long 504PLONG - Filmtools"@en
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Works with 504HD Fluid Head
Balances Oddly Weighted Cameras
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