This is a brand new Cannon SLR/DSLR Camera adapter for microscopes. With two adapters included, it offers three mounting sizes on microscope side, 23.2mm, 30mm and 30.5mm, fitting almost all kinds of microscopes including compound and stereo microscopes. This is a brand new Cannon SLR/DSLR Camera adapter for microscopes. Compatible with Canon SLR/DSLR cameras including EOS Rebel XTi, EOS Rebel XS, EOS Rebel XSi, EOS Rebel T1i, EOS Rebel T2i, 7D Mark II, 7D, D30, D60, 10D, 20D, 30D, 40D, 50D, 60D, 70D, 100D (Rebel SL1), 300D (Digital Rebel), 350D (Digital Rebel XT), 400D (Digital Rebel XTi), 450D (RebelXSi), 500D (Rebel T1i), 550D (Rebel T2i), 600D (Rebel T3i), 650D (Rebel T4i), 700D (Rebel T5i), 750D (Rebel T6i), 760D (Rebel T6S),1000D (Rebel XS), 1100D (Rebel T3), 1200D (Rebel T5) Magnification Power: 2X Material: metal Mounting Size on Microscope Side: 23.2mm, 30mm and/or 30.5mm