The Direct Mount Adapter is to be used in conjunction with our Reaper Grip upper assembly. This gives you the option to reduce the overall size and weight of our shooting rest system. Note: When using the direct mount, it works best with tripods that have center columns that allow rotation for horizontal panning. Vertical movement is however limited, but can be achieved by loosening the tightness of the grip. Both of the SLIK tripods we carry have center columns that will rotate and are ideal for this option. The Direct Mount Adapter has 3/8"-16 threads for mounting to standard tripods. A 1/4"-20 adapter is provided for tripods or quick release plates. The Direct Mount Adapter can be purchased as an add-on to Reaper Grips sold at beginning of 2016.