SVBONY T Ring Spotting Scope Camera Adapter for Nikon DSLR SLR Photography Sleeve M42 Thread Aluminum for Landscape Lens Spotting Scope Designed compatible Nikon DSLR SLR photography;connect camera to spotting scope for photography convenient and easily;connect the T ring mount and T Mount by M42 threads Connect the T ring mount and T Mount by M42 threads universal photography sleeve with M42 threads on both ends fits all 42mm diameter eyepiece;so please measure your eyepiece to make sure it will fit your particular spotting scope for it is a well made unit; T-ring adapter only for Nikon DSLR SLR camera High quality aluminum materials;full metal texture;durable and sturdy;solid and light wight;convenient to carry and one time for long term use Super easy to use;thread photography sleeve into t ring adapter;then thread the whole mount adapter into Nikon DSLR SLR to connect to spotting scope;manual focusing then get a clear image Lifetime warranty;we confidently promise lifetime warranty for each one from us