These professional heavy duty extension columns made of aluminum alloy material with enough wall thickness to increase safety and stability purposes. Columns come in different length to suit you needs. The length is 690mm. Comes with HA617 and HA717 extened the length to 800mm.
* Aluminum alloy extrusion with 4mm wall thickness to ensure safety and stability
* 40mm diameter allowed your video cable and signal cable to pass through and make
* The length is 690mm.