9to12″ Adjustable Ext Column

9 – 12″” extension colum. This Adjustable 1-1/2″” NPT SpeedConnect Extension Column saves installation time and maximizes security. Enables height adjustments in 1″” (25 mm) increments. Notched design for easy adjustment without disassembly. Column is 1-1/2″” NPT, threaded on both ends. 500 lb weight capacity.