"The Bogen Manfrotto MVK504AQ Fluid Video System includes 504HD fluid video head and the MVT535AQ aluminum single leg Tripod. The 504HD is a fluid video head that combines high performance variable fluidity with a wide variety of professional features, including 4-steps (0.2.5kg-5.5lbs, 5kg-11lbs and 7.5kg-16.5lbs) counterbalance system, ergonomic positioning of all knobs for tilt, drag and locking on the left side of the head, illuminated leveling bubble and replaceable pan-bar rosettes. The 504HD is designed to support the latest generation HD cameras weighing up to 12kg(26.4lbs) and counterbalancing up to 7.5Kg( 816.5lbs).The 504 HD has a 75 mm half ball tripod mount. The MVT535AQ aluminum single leg tripod features 4 sections and a 75mm half bowl. It also includes the MVA060T adapter that converts the 75mm into a 60mm half bowl. It is a sturdy and reliable solution, compact and easy to use. The 535's leg angle selectors allow each leg to be independently set quickly and easily (3 steps-23deg.-50deg.-70deg.). The key feature of this tripod is its flexibility in terms of operating height (from 22.8 cm/8.9" up to 171cm/67.3")."