The VEO+ MA1 Multi-Mount Adaptor is designed to allow you to mount additional equipment onto the central column of any VEO 3+ tripod. 

It simply slots over the end of the central column, and press down on the aluminium lever to lock it in place.  To tighten (or loosen) the grip to the central column, there is an adjustable screw that adjusts the pressure of the lever lock.

The VEO+ MA1 includes a 1/4" thread so you can attach it directly to a camera, head or other accessory, by simply turning the locking disc.  For 3/8" threads, you simply need a 1/4" to 3/8" adaptor which is supplied with most quality heads.

To minimise the risk of movement, there is a spring-loaded pin for products with this functionality.