Sirui 59-Inch 4 Section 55 Pound Capacity Strong and Study Carbon Fiber Tripod for Wildlife ShootingThe Sirui 59 Inch 4 Section Carbon Fiber Tripod combines a fixed base and a leveling base into one, perfect for wildlife shooting and professional landscape shooting. Two Purpose Bowl Head Adapter Twist the bottom plate to switch between the fixed base and the leveling base. The bowl head adapter comes with a flat platform for use with flat base heads. Fixed Base Mode When setting up heavy gear on flat surfaces, simply set the bowl head adapter to the