Full Metal Telescope Camera Adapter T-ring + 1.25" Telescope Mount Adapter Use directly with your camera for simple Barlow projection with your Barlow and camera. Enables eyepiece projection using your eyepiece in an extension tube. Supports extended Barlow projection with extension tube for increased magnification (converts a 2x Barlow into 3x or higher). Telescope Mount Adapter: 1.25-inch mounting size on the telescope side. Features M42x0.75mm outer thread on one end and standard 1.25" (31.7mm) fitting on the other. Inner surface is fully threaded to minimize reflections. Threaded to accept standard 1.25" eyepiece filters. T-ring (with M42x0.75mm thread): Connects Nikon DSLR and Canon DSLR cameras to the 1.25" extension tube and telescope mount adapter. Extension Tube: M42x0.75mm outer and inner threads; one side fits the T-ring, the other side fits the telescope mount adapter. Specifications: Material: Aluminum Color: Black Compatible with: - Canon EOS EF mount cameras (5D, 5D Mark II, 5D Mark III, 20D, 30D, 40D, 50D, 60D, 100D, 350D, 400D, 450D, 500D, 550D, 600D, 650D, 700D, 750D, 760D, 1100D, 1200D, 1D, 1D MkIII, Digital Rebel T4i, T3i, T2i, T1i, Xt, Xti, XSi, XS) - Nikon F mount DSLR cameras (D4, D4s, D3x, D3s, D3, D810, D800, D750, D700, D610, D600, D300S, D300, D200, D100, D7200, D7100, D7000, D5500, D5300, D5200, D5100, D5000, D3300, D3200, D3100, D3000, D90, D80, D70) - Telescopes with standard 1.25-inch eyepiece ports Package includes: 1 x Telescope Mount Adapter 1 x T-Ring 1 x Extension Tube