1、One Piece Gasket: This 2 section telescopic extension rod uses one piece gasket, which is more strong and more reliable than two pieces of gaskets, thus reducing failure and maintenance. 2、Telescopic Design: Adopts two section telescopic design, this carbon fiber tripod extension tube, which is more convenient for twisting and locking. 3、3/8 inch Screw Holes: The bottom of the extension tube has 3/8 inch femal thread holes, which is suitable for most tripods on the market, and it is easy to increase the height of tripods or monopods. 4、Conversion Nut: With 1/4 inch to 3/8 inch conversion nuts, tripod extension tube is widely compatible. 1/4 inch and 3/8 inch nuts can be interchanged. Just unscrew the mounting plate, reverse the double nut and tighten the mounting plate. 5、Carbon Fiber: The telescopic tripod extension rod is made of carbon fiber, which is very light, stable and has strong bearing capacity. Item Type: Tripod Center Column Extender Material: Carbon Fiber Section of Extension Tube: 2 1 x Tripod Center Column Extender