The Tiltall Headless Monocolumn is an option for those who want to add their own head, monoball, gimbal or fluid head to their classic Tiltall tripod. Simply remove that center column of the Tiltall tripod and replace with the monocolumn to use any head with a 3/8"-16 "top" thread or 1/4"-20 thread stud. The monocolumn extends 18 inches higher than original Tiltall head/column. Headless column is designed for the current model of the Tiltall tripod but may not work on older Marchioni versions of this tripod. The 3/8"-16 "top" thread stud can be reversed to a 1/4"-20 thread.