This top plate is the same as the one that comes as standard with a new gitzo systematic tripod series 2 3 or 4 it can mount a flat based photographic or video head or any other equipment with a 38 female thread the machined ring on the underside of the plate is compatible with the safety catch feature of gitzos updated systematic range offering secure accident proof support even during changeovers of centre components the bottom of the plate also features a hook that allows weight