***** **********Best Quality Guranteed. *****fully metal*****Designed for Nikon SLR DSLR camera digiscoping; connect camera to telescope for direct prime focus photography convenient and easily*****Super easy to use; thread t adapter into t ring adapter; then thread the whole mount adapter into DSLR SLR to connect to telescope*****Universal t adapter fits all standard 1.25" diameter telescope or microscope etc; t ring adapter fit for any standard Nikon lens*****Great quality metal materials and tight; non binding fit; one time purchase for long term use*****Connect camera to telescope for direct prime focus photography convenient and easily