Features: 1. This Universal Camera Adapter is precision made of black-anodized aluminum and is compatible with 1.25inch telescope focusers. 2. Compatible for both reflector and telescopes with 1.25inch eyepiece holders. 3. Useful for either prime-focus or eyepiece-projection astrophotography or reflector telescopes. 4. Lets you use a T-ring equipped DSLR or SLR camera directly to your telescope. The barrel of the adapter is threaded for 1.25" filters. 5. Double-lens teleconverter projection with extension tube using extension tube (extended multiplier projection makes 2x multiplier in 3x or higher Extender) Specification: Material: Alloy Size: 1.25inch Package List: 1x extension tube 1x adapter circle