Leofoto's DC Series Carbon Fiber Add-On Center Columns allows you to add more height to your tripod setup. These columns are made from 2 sections of lightweight 10-layer carbon fiber with high quality rubber grip twist leg locks and anodized aluminum hardware. The column bases have 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: Base Diameter: 29mm/1.14" Tube Diameter: 22/19mm Length: 200 - 320mm/7.87" - 12.6" Weight: 100g/0.22lbs Leofoto DC-222C Carbon Fiber Add-On Convertible Center Column for LS-225C/224C Tripods DC-222C