SVBONY Fully Metal 1.25" T Adapter and T2 T Ring Adapter for Canon EOS Cameras and Photography Dedicated CA1 Sleeve Extended Cylinder for Telescope Designed compatible Canon EOS SLR DSLR camera and Photography;connect camera to telescope for direct prime focus photography convenient and easily Super easy to use;eyepiece put into the extended cylinder;then screw t adapter and t ring adapter and extended cylinder together;then attach camera to telescope;fit for Canon EOS only Connect the T-ring mount and T-Mount by M42 threads;extended cylinder length 68mm;fit many eyepiece;It can adjust eyepiece location;help you to get more sharp image High quality aluminum materials;fit any 1.25" diameter eyepiece holder telescope and microscope;one time purchase for long term use Lifetime warranty;we confidently promise lifetime warranty for each one from us