This adaptor plate has been specifically designed to eliminate unwanted rotation of the spotting scope during viewing its universal design means it can be used to mount all makes of spotting scope no matter what their foot shape square rectangular trapezium on any manfrotto two way head via the rc2 connector system the adaptor is made from machine tooled aluminium with a black anodised finish in addition to the standard 14 screw it has two grub set screws to lock the spotting scope s