The Leofoto YB-75K Series Leveling Bases are designed to help users level a tripod in order to maintain level horizons and reduce time-consuming post processing corrections. The leveling base features a lightweight aluminum construction and the base is topped by the widely used Arca-type clamp. The handle twists to lock the base in place for ease of use when mounted with three different handle length options available. Specifications: Base diameter: 75mm / 2.95inLength: 174mm / 6.85inWeight: 369g / 0.81lb Leofoto 75mm Leveling Half-Ball Arca Compatible Adapter w/Clamp Knob Control YB-75LK