Best Seller | Chief CMS-0608 6-8' Speed-Connect Adjustable Extension Column (Black) CMS0608 Authorized Chief USA Dealer! Read 23.00 User Reviews on the CMS-0608 6-8'. Buy today from ... Threaded on both ends the Chief CMS-0608 is a 6-8' (182.8-243.8cm) adjustable extension column that can be used with any 1.5 NPT accessory to lower a projector or flat panel display to a desired height. Includes a continuously adjustable notch for... more | | $172.95 FREE shipping go to store |