 "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 Hydrostatic Ball Head (with RC4 Rapid Connect System)"@en, " Manfrotto System) "@en Prices - CNET"@en