Manfrotto 509HD 546GBK fluid head (100mm bowl) + 545B twin aluminum legs tripod with middle spreader + padded bag. The MAnfrotto 509HD546GBK is the result of an important technical evolution - the perfect synthesis between an innovative “bridge architecture” And Manfrotto’s cutting edge engineering: Bridging Technology - an exclusive Manfrotto patent. A new bridge leading the videographer And photographer to even better results with today’s high-definition cameras.