 "Manfrotto 502 Video Head MVH502AH" "Camera & Photo Accessories - Page 341 | All Tech Toys"
"This head is the perfect synthesis between and innovative "Bridge Architecture" and manfrotto's Cutting edge engineering.  A pan fluid drag system gives more ergonomic operation while a wider top plate and longer sliding plate offer extra stability and balance.  This head offlbs @mmers an even more rigid structure for maximum precision and improved responsiveness.  The built in easy link connectors offer extreme flexibility for accessory attachments.  The counterbalance system and ball bearing drag sysem both offer precision and smoothness of operation.    This head has been carefully constructed from lightweight modern materials for optimal balance of strength and size.  Technical Specifications:  Max Payload 13.2lbs; CSB 8.8lbs@55mm;  FDS pan variable cartridge; FDS tilt variable cartridge;  Tilt range +90° / -85°; Camera fixing quick release;  Top plate 140mm 5.5 inches;  Height 5.1in.; weight 3.5lbs." 
 "Manfrotto 502HD Pro Video Head w/ Flat Base MVH502AH" " Manfrotto MVH502AH For sale! - EuroOptic.com
"This Manfrotto 502HD Pro Video Head with Flat Base has a 3/8-16" Connection and is designed for use with HDSLR cameras." 