Leofoto Carbon Fiber Add-On Center Column Black. Made up of two lightweight yet durable 10-layer carbon fiber tubes the DC Center Column adds height to the setup featuring the same high quality rubber grip twist leg lock and anodized aluminum hardware that come standard on Leofoto tripods. The column base has a 3/8''-16 threaded mounting socket while the top features a spring-loaded convertible 3/8''-16 threaded mounting stud that can be slid down to reveal a 1/4''-20 threaded mounting stud making it compatible with virtually any head. Specifications for Leofoto DC-322C Carbon Fiber Add-On Center Column: Manufacturer: Leofoto Color: Black Features of Leofoto DC-322C Carbon Fiber Add-On Center Column Aluminum CNC Machining Package Contents: Leofoto DC-322C Carbon Fiber Add-On Center Column Leofoto DC-322C: DC-322C Carbon Fiber Add-On Center Column Black